Search Subject Areas | Preprints.org

Preprint ARTICLE | doi:10.20944/preprints202306.0460.v1

Magnetic Analysis of MgFe Hydrotalcites as Powder and Dispersed in Thin Films within a Keratin Matrix

Franco Dinelli, Michele Modestino, Armando Galluzzi, Tamara Posati, Mirko Seri, Roberto Zamboni, Giovanna Sotgiu, Massimiliano Polichetti

Subject: Physical Sciences, Condensed Matter Physics Keywords: Hydrotalcites; Magnetic properties; NanoMOKE; PPMS-VSM; Thin Films; Keratin

Online: 6 June 2023 (12:15:21 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.0447.v1

Towards Resonantly Enhanced Acoustic Phonon-Exchange Magnon Interactions at THz Frequencies

Tudor-Gabriel Mocioi, Antonia Ghita, Vasily Temnov

Subject: Physical Sciences, Condensed Matter Physics Keywords: magneto-acoustics; magnetization dynamics; ferromagnetic resonance; exchange magnons; acoustic phonons; Landau-Lifshitz-Gilbert equations; ultrafast laser interaction with materials

Online: 6 June 2023 (11:34:20 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202306.0392.v1

Review of Single Crystal Synthesis of 11 Iron-Based Superconductors

Qiang Hou, Longfei Sun, Yue Sun, Zhixiang Shi

Subject: Physical Sciences, Condensed Matter Physics Keywords: single crystal; hydrothermal; CVT; self-flux; annealing; 11 iron-based superconductors; superconductivity

Online: 6 June 2023 (07:11:59 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.0276.v1

Strain Modulation of Electronic Properties in Monolayer SnP2S6 and GeP2S6

Junlei Zhou, Yuzhou Gu, Yue-E Xie, Fen Qiao, Jiaren Yuan, JingJing He, Sake Wang, Yangsheng Li, Yangbo Zhou

Subject: Physical Sciences, Condensed Matter Physics Keywords: Monolayer semiconductor; Band gap; Electronic structure; Biaxial strain; DFT calculations

Online: 5 June 2023 (09:58:45 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.0138.v1

Study of 6√3 Reconstruction Conversion on the of 4H-SiC(0001) Surface to Quasi-free Epitaxial Graphene with Electron Diffraction

Irina Sergeevna Kotousova, Sergey Pavlovich Lebedev, Vladimir Viktorovich Antipov, Alexander Alexandrovich Lebedev

Subject: Physical Sciences, Condensed Matter Physics Keywords: silicon carbide; RHEED; reconstruction; hydrogen intercalation; quasi-free single-layer graphene

Online: 2 June 2023 (10:03:28 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.0056.v1

Exploring Structural, Electronic, Magnetic, and Transport Properties of 2D Cr, Fe, and Zr Monoborides

Isabel Arias-Camacho, Nevill Gonzalez Szwacki

Subject: Physical Sciences, Condensed Matter Physics Keywords: Transition metal borides; MBenes; Energy conversion and storage; 2D magnets

Online: 1 June 2023 (07:50:01 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.2049.v1

Molecular Dynamics Modeling for the Elastic Moduli Determination of Polymer-SWCNT Composites

Aigul Shamsieva, Alexander Evseev, Irina Piyanzina, Oleg Nedopekin, Dmitrii Tayurskii

Subject: Physical Sciences, Condensed Matter Physics Keywords: carbon nanotube, polymer composite, molecular dynamics simulation, elastic modulus

Online: 30 May 2023 (05:01:48 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.2015.v1

Specific Features of Formation of Electron and Hole Trapping Centers in Irradiated CaSO₄-Mn and BaSO₄-Mn

Turlybek Nurakhmetov, Temirulan Alibay, Keleshek Zhangylyssov, Dulat Daurenbekov, Amangeldy Zhunusbekov, Aset Kainarbay, Batsaiy Sadykova, Doszhan Tolekov, Raushan Shamiyeva

Subject: Physical Sciences, Condensed Matter Physics Keywords: Intrinsic emission, recombination, electron-hole trap centers, sulfate, phosphor.

Online: 29 May 2023 (13:38:52 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.1595.v1

Magnetic and Transformation Properties of Ni2MnGa Combinatorically Substituted With 5 atom.% of Transition Elements From Cr to Cu – Experimental Insight

Oleg Heczko, Michal Rameš, Vít Kopecký, Petr Veřtát, Michal Varga, Ladislav Straka

Subject: Physical Sciences, Condensed Matter Physics Keywords: magnetic shape memory; transitional elements alloying; Ni2MnGa; Heusler alloys; Pauli-Slater curve

Online: 23 May 2023 (07:31:58 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.1025.v1

Pressure-Induced Structural Phase Transition of Co-Doped SnO2 Nanocrystals

Vinod Panchal, Laura Pampillo, Sergio Ferrari, Vitaliy Bilovol, Catalin Popescu, Daniel Errandonea

Subject: Physical Sciences, Condensed Matter Physics Keywords: High Pressure; Phase Transition; Synchrotron Radiation, X-ray Diffraction

Online: 15 May 2023 (10:37:43 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0942.v1

Intrinsic Coherence Length Anisotropy in Nickelates, and Some Pnictides and Chalcogenides Superconductors

Evgeny F. Talantsev

Subject: Physical Sciences, Condensed Matter Physics Keywords: nickelate superconductors; iron-based supercondcutors; superconducting coherence length; anisotropy of characteristic length in supercondcutors

Online: 12 May 2023 (11:37:48 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202305.0597.v1

Triplet Superconducting Correlations in Hybrid Superconducting Junctions

Karen Constantinian, Gennady Ovsyannikov, Andrey Petrzhik, Yulii Kislinskii

Subject: Physical Sciences, Condensed Matter Physics Keywords: superconductivity; Josephson effect; hybrid heterostructures; mesa-structure; magnetic proximity effect; triplet pairing; spin-orbit interaction

Online: 9 May 2023 (08:16:47 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0384.v1

Bose Polaron in a One-Dimensional Lattice with Power-Law Hopping

G. A. Domínguez-Castro

Subject: Physical Sciences, Condensed Matter Physics Keywords: Impurity physics; optical lattices; power-law hopping

Online: 6 May 2023 (05:41:25 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0267.v1

Investigation of Electrochromic, Combinatorial TiO₂-SnO₂ Mixed Layers by Spectroscopic Ellipsometry using Different Optical Models

Noor Taha Ismaeel, Zoltán Lábadi, Peter Petrik, Miklós Fried

Subject: Physical Sciences, Condensed Matter Physics Keywords: Titanium-Tin Oxide; reactive sputtering; spectroscopic ellipsometry; electrochromic materials

Online: 4 May 2023 (12:59:09 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0212.v1

One- and Two-Particle Correlation Functions in the Cluster Perturbation Theory for Cuprates

Valerii I. Kuz'min, Sergey V. Nikolaev, Maxim M. Korshunov, Sergey G. Ovchinnikov

Subject: Physical Sciences, Condensed Matter Physics Keywords: Strong electronic correlations; Cuprates; Hubbard model; Cluster perturbation theory

Online: 4 May 2023 (07:36:01 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202305.0101.v2

The Paramagnetic Meissner Effect (PME) in Metallic Superconductors

Michael Rudolf Koblischka, Ladislav Pust, Crosby Soon Chang, Thomas Hauet, Anjela Koblischka-Veneva

Subject: Physical Sciences, Condensed Matter Physics Keywords: Meissner effect; PME; metallic superconductors

Online: 4 May 2023 (05:28:46 CEST)

Show abstract| Download PDF| Share

The experimental data in the literature concerning the Paramagnetic Meissner Effect (PME) or also called Wohlleben effect are reviewed with the emphasis on the PME exhibited by metallic, s-wave superconductors. The PME was observed in field-cool cooling (FC-C) and field-cool warming (FC-W) m(T)-measurements on Al, Nb, Pb, Ta, in compounds like e.g., NbSe2, In-Sn, ZrB12 and others and also in MgB2, the metallic superconductor with the highest transition temperature. Furthermore, samples with different shapes like crystals, polycrystals, thin films, bi- and multilayers, nanocomposites, nanowires, mesoscopic objects and porous materials exhibited the PME. The characteristic features of the PME, found mainly in Nb disks, like the characteristic temperatures T1 and Tp and the apparative details of the various magnetic measurement techniques applied to obbserve the PME are discussed. We also show that PME can be observed with the magnetic field applied parallel and perpendicular to the sample surface, that PME can be removed by abrading the sample surface and that PME can be introduced or enhanced by irradiation processes. The PME can be observed as well in magnetization loops (MHLs, m(H)) in a narrow temperature window Tp<Tc, which enables the construction of a phase diagram for a superconducting sample exhibiting the PME. We found that the Nb disks still exhibit the PME after more than 20 years, and we present the efforts of magnetic imaging techniques (scanning SQUID microscopy, magneto-optics, diamond nitrogen-vacancy (NV)-center magnetometry, and low-energy muon spin spectroscopy, (LE-μSR)). Various attempts to explain PME behavior are discussed in detail. Especially, magnetic measurements of mesoscopic Al disks brought out important details employing the models of a giant vortex state and flux compression. Thus, we consider these approaches and demagnetization effects as the base to understand the formation of the paramagnetic signals. New directions for further experimental and theoretical analysis are also outlined.

Preprint REVIEW | doi:10.20944/preprints202305.0179.v1

Simulational Tests of the Rouse Model

George Phillies

Subject: Physical Sciences, Condensed Matter Physics Keywords: computer simulations polymeric fluid; polymer melt; Rouse model; Rouse dynamics

Online: 4 May 2023 (03:56:59 CEST)

Show abstract| Download PDF| Share

Preprint SHORT NOTE | doi:10.20944/preprints202305.0174.v1

Numerical Description of Melting/Solidification Temperature of Oxide Nuclear Fuels

Valeriy Kizka

Subject: Physical Sciences, Condensed Matter Physics Keywords: Thorium–Uranium Dioxide; Thorium–Plutonium Dioxide; Uranium–Plutonium Dioxide; Actinide Oxides; Melting; Solidification

Online: 4 May 2023 (03:39:53 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202305.0101.v1

The Paramagnetic Meissner Effect (PME) in Metallic Superconductors

Michael Rudolf Koblischka, Ladislav Pust, Crosby Soon Chang, Thomas Hauet, Anjela Koblischka-Veneva

Subject: Physical Sciences, Condensed Matter Physics Keywords: Meissner effect; PME; metallic superconductors

Online: 3 May 2023 (05:56:05 CEST)

Show abstract| Download PDF| Share

The experimental data in the literature concerning the Paramagnetic Meissner Effect (PME) or also called Wohlleben effect are reviewed with the emphasis on the PME exhibited by metallic, s-wave superconductors. The PME was observed in field-cool cooling (FC-C) and field-cool warming (FC-W) m(T)-measurements on Al, Nb, Pb, Ta, in compounds like e.g., NbSe2, In-Sn, ZrB12 and others and also in MgB2, the metallic superconductor with the highest transition temperature. Furthermore, samples with different shapes like crystals, polycrystals, thin films, bi- and multilayers, nanocomposites, nanowires, mesoscopic objects and porous materials exhibited the PME. The characteristic features of the PME, found mainly in Nb disks, like the characteristic temperatures T1 and Tp and the apparative details of the various magnetic measurement techniques applied to obbserve the PME are discussed. We also show that PME can be observed with the magnetic field applied parallel and perpendicular to the sample surface, that PME can be removed by abrading the sample surface and that PME can be introduced or enhanced by irradiation processes. The PME can be observed as well in magnetization loops (MHLs, m(H)) in a narrow temperature window Tp<Tc, which enables the construction of a phase diagram for a superconducting sample exhibiting the PME. We found that the Nb disks still exhibit the PME after more than 20 years, and we present the efforts of magnetic imaging techniques (scanning SQUID microscopy, magneto-optics, diamond nitrogen-vacancy (NV)-center magnetometry, and low-energy muon spin spectroscopy, (LE-μSR)). Various attempts to explain PME behavior are discussed in detail. Especially, magnetic measurements of mesoscopic Al disks brought out important details employing the models of a giant vortex state and flux compression. Thus, we consider these approaches and demagnetization effects as the base to understand the formation of the paramagnetic signals. New directions for further experimental and theoretical analysis are also outlined.

Preprint ARTICLE | doi:10.20944/preprints202304.1194.v1

Nonlinear Electrоmagnetic Properties of Thinfilm Nanocomposites (CoFeZr)_x(MgF₂)_100-x

Evelina Pavlovna Domashevskaya, Sergey Alexandrovich Ivkov, Pavel Vladimirovich Seredin, Dmitry Leonidovich Goloshchapov, Konstantin Alexandrovich Barkov, Stanislav Viktorovich Ryabtsev, Yrii Gavriilovich Segal, Alexander Victorovich Sitnikov, Elena Alexandrovna Ganshina

Subject: Physical Sciences, Condensed Matter Physics Keywords: nanocomposites; nanocrystals; magnetoresistance; percolation threshold; magneto-optical properties; transversal Kerr effect; superparamagnetic; soft ferromagnetic

Online: 29 April 2023 (03:17:33 CEST)

Show abstract| Download PDF| Share

The aim of this work is a comprehensive study of the effect of variable atomic composition and structural-phase state of (CoFeZr)x(MgF2)100-x nanocomposites (NCs) on their nonlinear electronic and magnetic/magneto-optical properties. Micrometer-thick nanocomposites layers on the glass substrates were obtained by ion-beam sputtering of a composite target in the argon atmosphere in a wide range of compositions x=9-51at.% The value of the resistive percolation threshold xper=34 at.%, determined from the concentration dependences of the electrical resistance of NCs, coincides with the beginning of nucleation of metallic nanocrystals CoFeZr in MgF2 dielectric matrix. The absolute value of maximum magnetoresistance of NCs is 2.4 % in a magnetic field of 5.5 kOe at x=25 at.%, up to the percolation threshold. Two maxima appear in the concentration dependences of magneto-optical transversal Kerr effect, one of which at x = 34 at.% corresponds to the formation of CoFeZr alloy nanocrystals of a hexagonal structure, and the second one at x=45 at.% corresponds to the phase transition of nanocrystals from a hexagonal to a cubic body-centered structure. The magnetic percolation threshold in (CoFeZr)x(MgF2)100-x system at xfm=34 at.% with the appearance of a hysteresis loop and a coercive force of Hc≈ 8 Oe, coincides with the resistive percolation threshold xper=34 at.%. Concentration dependence of the coercive force showed that at low contents of metallic alloy x<30 at.% NCs are superparamagnetic (Hc=0). With an increase of the alloy content, in the region of magnetic and resistive percolation thresholds NCs exhibit a magnetically soft ferromagnetic character and do not change it far beyond the percolation threshold with the maximum value of the coercive force Hc< 30 Oe. Decrease in magnetic order and soft ferromagnetic are influenced by the diamagnetic phase FeF2 that we discovered at the interface of magnetic nanocrystals CoFeZr with a dielectric matrix MgF2 by the Mössbauer spectroscopy.

Preprint ARTICLE | doi:10.20944/preprints202304.1155.v1

Stark Effect for Donors in Rolled-Up Quantum Well

Luis Francisco García Russi, Ilia D. Mikhailov, Ruthber Antonio Escorcia Caballero, Jose Sierra Ortega, Gene Elizabeth Escorcia Salas

Subject: Physical Sciences, Condensed Matter Physics Keywords: Rolled-Up Quantum well; Donor impurity; Binding energy; External electric field; Stark effect

Online: 28 April 2023 (09:00:00 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202304.1054.v1

Application of WKB Theory to Investigating Electron Tunneling in Kek-Y Graphene

Andrii Iurov, Liubov Zhemchuzhna, Godfrey Gumbs, Danghong Huang

Subject: Physical Sciences, Condensed Matter Physics Keywords: WKB approximation; semi-classical action; electron tunneling; transmission amplitude

Online: 27 April 2023 (07:16:21 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202304.0727.v1

Electro-elastic Modeling of Multi-Step Transitions in two Elastically Coupled and Sterically Frustrated 1D Spin-Crossover Chains

Rachid Traiche, Hassane Oubouchou, Kamel Boukheddaden

Subject: Physical Sciences, Condensed Matter Physics Keywords: Spin Crossover SCO; thermal transition; elastic frustration; MC simulations

Online: 21 April 2023 (14:27:50 CEST)

Show abstract| Download PDF| Share

1D spin crossover (SCO) solids which convert between the low-spin (LS) and the high-spin (HS) states are widely studied in the literature due to their diverse thermal and optical characters which allows obtaining many original behaviors, such as large thermal hysteresis, incomplete spin tran-sitions, as multi-step spin transitions with self-organized states. In the present work, we investigate the thermal behaviors of a system of two-elastically coupled 1D mononuclear chains, using the electro-elastic model, by including an elastic frustration in the nearest neighbors (nn) bond length distances of each chain. The chains are made of SCO sites that are coupled elastically through springs with their nn and next-nearest neighbors. The elastic inter-chain coupling includes diagonal springs, while the nn inter-chains distance is fixed to that of the high-spin state. The model is solved using MC simulations, performed on the spin states and the lattice distortions. When we only frustrate the first chain, we found a strong effect on the thermal-dependence of the HS fraction of the second chain, whose, by lowering its transition temperature which is also accompanied with the appearance of a significant residual HS fraction at low temperature. In the second step, we frustrate both chains by imposing different frustration rates and found that, for high frustration values, the thermal dependence of the total HS fraction exhibits three step and even four step spin transitions. The careful examination of the spin state structures in the plateau regions revealed the existence of special antiferro-elastic structure of type LSLS-HSHS-LSLS-HSHS along the first chain, and HSHS-LSLS-HSHS-LSLS along the second, also showing that the two chains seem to be antifer-ro-elastically coupled. This type of organization is interesting, because it anticipates the possible existence of periodic structures made of alternate 1D antiferro-like HS-LS strings coupled in the ferro-like fashion along the interchain direction in the 2D case.

Preprint ARTICLE | doi:10.20944/preprints202304.0676.v1

mech2d: An Efficient Tool for High-Throughput Calculation of Mechanical Properties for Two-Dimensional Materials

Haidi Wang, Tao Li, Xiaofeng Liu, Weiduo Zhu, Zhao Chen, Zhongjun Li, Jinlong Yang

Subject: Physical Sciences, Condensed Matter Physics Keywords: mechanical properties; 2D materials; high-throughput; DFT.

Online: 21 April 2023 (07:20:16 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202304.0460.v1

Thermal Disorder in Finite-Length Carbon Nanowire

Chi Ho Wong, Evgeny Buntov, Wai Sze YIP, Suet To, Malvina Guseva, Anatoly Zatsepin

Subject: Physical Sciences, Condensed Matter Physics Keywords: Carbon nanowire; phase transition; Monte Carlo simulation

Online: 18 April 2023 (02:53:53 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202304.0243.v1

Nuclear Magnetic Resonance Relaxation Pathways in Electrolytes for Energy Storage

Carla C. Fraenza, Steve Greenbaum, Sophia N. Suarez

Subject: Physical Sciences, Condensed Matter Physics Keywords: NMR spin-lattice relaxation time; NMR Fast Field Cycling (FFC); electrolytes

Online: 12 April 2023 (05:39:57 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202304.0183.v1

Thermal Expansion Coefficients in La3Ga5SiO14 and Ca3TaGa3Si2O14 Crystals

Dmitry Roshchupkin, Dmitry Kovalev

Subject: Physical Sciences, Condensed Matter Physics Keywords: langasite; thermal expansion coefficients; X-ray powder diffraction; piezoelectric crystals; Czochralski method

Online: 11 April 2023 (03:38:49 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202304.0099.v1

Reconstruction-Induced $\varphi_0$ Josephson Effect in Quantum Spin Hall Constrictions

Lucia Vigliotti, Fabio Cavaliere, Giacomo Passetti, Maura Sassetti, Niccolò Traverso Ziani

Subject: Physical Sciences, Condensed Matter Physics Keywords: Josephson junctions; Topological insulators; Symmetry breaking; φ0 effect

Online: 6 April 2023 (13:35:08 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202301.0377.v4

A Quantum-Classical Model of Brain Dynamics

Alessandro Sergi, Antonino Messina, Carmelo M. Vicario, Gabriella Martino

Subject: Physical Sciences, Condensed Matter Physics Keywords: quantum-classical dynamics; quantum brain; open quantum systems; neuroscience; electromagnetic brain stimulation; clinical psychology

Online: 31 March 2023 (04:29:56 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201911.0033.v3

Circuit-Based Approaches for a Superconducting-Like Behavior with High Critical Current Density

Shinichi Ishiguri

Subject: Physical Sciences, Condensed Matter Physics Keywords: temperature-independent superconductivity; circuit-approached superconductivity; electron pair; Bose–Einstein condensation; large superconducting energy gap; London equation; Meissner effect; macroscopic wave function; critical current density; negative voltages

Online: 20 March 2023 (06:59:15 CET)

Show abstract| Download PDF| Share

In general, a superconductor has zero resistance, although it requires significant refrigeration or high pressures, which prevents it into practical applications. In other words, solving these issues implies main superconducting researches. This paper describes a new type of superconductivity, which is independent for temperatures and which operates without pressures. The principles of the presented system are as follows:First a voltage source, a current source and a load are connected in series. Then, the voltage of the voltage source is adjusted to balance the voltage of the load. Under this condition, the balance of the two voltages provides a zero voltage between the taps of the current source and the generated current from the voltage source becomes zero because of the internal infinite resistance of the current source. As a result, the electric powers generated by the two sources are zero, and therefore, the load cannot generate Joule heating because of energy conservation. However, the current from the current source (not the voltage source) is not zero; therefore, we can predict that the resistance of the load must be zero. As a theory, we derived a new electric field and transient attractive force, which result in a very short coherence of an electron pair because there is not Coulomb repulsive force due to the existence of the above transient attractive force. Note that both the forces are derived by the Poisson equation, which implies that they cannot compatible. Therefore, the pair combination energy from spins becomes extremely strong, which is not destroyed by the normal heat energy. Moreover, every center-of-mass motion of electron pair results in the Bose-Einstein condensation and the macroscopic wave function, which produces the London equation (i.e., the Meissner effect). Moreover, by introducing the equivalent circuit, this paper conducted numerical calculations. As a result, we could derive numerically zero resistance and responses for additional static magnetic fields as a discharged current. Note that this paper has prepared Appendix section, which provides a guide to reproduce actual experiments and preliminary experimental results.

Preprint ARTICLE | doi:10.20944/preprints202301.0377.v3

A Quantum-Classical Model of Brain Dynamics

Alessandro Sergi, Antonino Messina, Carmelo M. Vicario, Gabriella Martino

Subject: Physical Sciences, Condensed Matter Physics Keywords: quantum-classical dynamics; quantum brain; open quantum systems; neuroscience; electromagnetic brain stimulation; clinical psychology

Online: 6 March 2023 (04:43:10 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202302.0490.v1

Enhanced Efficiency at Maximum Power in a Fock-Darwin Model Quantum Dot Engine

Francisco J. Peña, Nathan Myers, Daniel Órdenes, Francisco Albarrán-Arriagada, Patricio Vargas

Subject: Physical Sciences, Condensed Matter Physics Keywords: Magnetic cycle; Quantum otto cycle; Quantum thermodynamics

Online: 28 February 2023 (02:32:00 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202302.0270.v1

The Most Stable Structure of PTB7-Th: DFT Conformational Analysis

Sarah Ayoub, Jolanta Lagowski

Subject: Physical Sciences, Condensed Matter Physics Keywords: PTB7-Th; donor polymer; lowest energy structure; alkane side chains; density func-tional theory; dispersion correction; long-range correction

Online: 16 February 2023 (04:43:46 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202111.0165.v2

Moiré Superconductivity and the Roeser-Huber Formula

Michael Rudolf Koblischka, Anjela Koblischka-Veneva

Subject: Physical Sciences, Condensed Matter Physics Keywords: Moiré Superconductors; twisted bilayer graphene; WSe2; superconducting transition temperature; Roeser-Huber formula

Online: 13 February 2023 (04:32:32 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202302.0190.v1

The System’s Point of View applied to Dielectrophoresis in Plate Capacitor and Pointed-versus-Pointed Electrode Chambers

Jan Gimsa, Michal M. Radai

Subject: Physical Sciences, Condensed Matter Physics Keywords: inhomogeneous object polarization; AC electro-kinetics; high force; DEP trajectory; micro-fluidics; MatLab® model; mirror charges; edge effects; LMEP; μTAS

Online: 10 February 2023 (09:27:28 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202005.0105.v4

Analytical Descriptions of High-T_c Cuprates by Introducing Rotating Holes and a New Model to Handle Many-Body Interactions

Shinichi Ishiguri

Subject: Physical Sciences, Condensed Matter Physics Keywords: high Tc cuprates; macroscopic Boson; many-body interactions; pseudo gap; critical temperature; anomaly metal phase; conservation of angular momentum; attractive force; Cooper pair

Online: 2 February 2023 (11:23:18 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202301.0377.v2

A Quantum-Classical Model of Brain Dynamics

Alessandro Sergi, Antonino Messina, Gabriel Hanna, Carmelo M. Vicario, Gabriella Martino

Subject: Physical Sciences, Condensed Matter Physics Keywords: quantum-classical dynamics; quantum brain; open quantum systems; neuroscience; electromagnetic brain stimulation; clinical psychology

Online: 29 January 2023 (02:46:38 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202301.0377.v1

A Quantum-Classical Model of Brain Dynamics

Alessandro Sergi, Antonino Messina, Gabriel Hanna, Carmelo M. Vicario, Gabriella Martino

Subject: Physical Sciences, Condensed Matter Physics Keywords: quantum-classical dynamics; quantum brain; open quantum systems; neuroscience; electromagnetic brain stimulation; clinical psychology

Online: 22 January 2023 (04:11:47 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202301.0218.v1

Effects of the Spatial Extension of the Edge Channels on the Interference Pattern of a Helical Josephson Junction

Lucia Vigliotti, Alessio Calzona, Niccolò Traverso Ziani, F. Sebastian Bergeret, Maura Sassetti, Björn Trauzettel

Subject: Physical Sciences, Condensed Matter Physics Keywords: edge states; Josephson junctions; topological insulators; interference pattern; 2ϕ0-periodicity

Online: 12 January 2023 (08:55:53 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202301.0098.v1

Giant angular Nernst Effect in the Organic Metal α-(BEDT-TT)2KHg(SCN)4

Danica Krstovska, Eun Sang Choi, Eden Steven

Subject: Physical Sciences, Condensed Matter Physics Keywords: Nernst effect; organic metal; charge density wave; quantum oscillations; relaxation processes

Online: 5 January 2023 (04:27:29 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202212.0267.v1

Novel High-Pressure Nanocomposites for Cathode Materials in Sodium Batteries

Aleksander Szpakiewicz-Szatan, Szymon Starzonek, Tomasz K. Pietrzak, Jerzy E. Garbarczyk, Sylwester J. Rzoska, Michał Boćkowski

Subject: Physical Sciences, Condensed Matter Physics Keywords: high pressure; nanocomposites; cathode materials; conductive glasses; hopping conductivity; Na-ion battery

Online: 15 December 2022 (06:43:14 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202211.0414.v1

Are Mechanically Adjusted Cellulose Nanocrystal (CNC)-based Bio-targeted Hydrogels Satisfying the Requirements of Biologically based Applications?

Aref Abbasi Moud

Subject: Physical Sciences, Condensed Matter Physics Keywords: cellulose; hydrogel; nanocrystals; 3-D printing

Online: 22 November 2022 (09:31:07 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202211.0409.v1

First-principles calculations of the phonon, mechanical and Thermoelectric properties of half-Heusler alloy VIrSi alloys

Paul O. Adebambo, Bamidele I. Adetunji, Oghenekevwe T. Uto, Stephane Kenmoe, Gboyega A. Adebayo

Subject: Physical Sciences, Condensed Matter Physics Keywords: Phonon dispersion; PDOS; Mechanical properties; Power factor and Figure of Merit

Online: 22 November 2022 (07:12:14 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202211.0404.v1

On the Thermodynamics of Fermions at any Temperature based on Parametrized Partition Function

Hongwei Xiong, Yunuo Xiong

Subject: Physical Sciences, Condensed Matter Physics Keywords: fermion sign problem; path integral molecular dynamics; path integral Monte Carlo; thermodynamic properties; large Fermi system; ground state

Online: 22 November 2022 (03:56:48 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202211.0204.v1

Progress and Perspectives of Spectroscopic Studies at Carbon K-edge Using Novel Soft X-ray Pulsed Sources

Zeinab Ebrahimpour, Marcello Coreno, Luca Giannessi, Massimo Ferrario, Augusto Marcelli, Federico Nguyen, Seyed Javad Rezvani, Francesco Stellato, Fabio Villa

Subject: Physical Sciences, Condensed Matter Physics Keywords: Soft X-ray FEL; HHG pulses; time-resolved X-ray spectroscopy; Carbon K-edge; Conical inter-sections; EuPRAXIA@SPARC_LAB

Online: 10 November 2022 (11:47:05 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201909.0038.v3

Application of Local Gauge Theories to Fluid Mechanics Part 1 - Fluid Mechanics as a Local Gauge Theory and Relation to Navier-Stokes Equations

Thomas Merz

Subject: Physical Sciences, Condensed Matter Physics Keywords: fluid dynamics; turbulent flow; stationary flow; SO(3) local gauge; quasiparticle; non-linearity

Online: 12 October 2022 (12:23:21 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202210.0156.v2

Application of Local Gauge Theory to Fluid Mechanics - Part 2 Example: Basic Model of Tollmien-Schlichting Waves and Analytical Solution

Thomas Merz

Subject: Physical Sciences, Condensed Matter Physics Keywords: boundary layers; transition to turbulence; Navier–Stokes equations; local gauge

Online: 12 October 2022 (10:32:00 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202210.0156.v1

Application of Local Gauge Theory to Fluid Mechanics - Part Ii: Example: Basic Model of Tollmien-Schlichting Waves and Analytical Solution

Thomas Merz

Subject: Physical Sciences, Condensed Matter Physics Keywords: boundary layers; transition to turbulence; Navier–Stokes equations; local gauge

Online: 11 October 2022 (15:28:43 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202205.0411.v3

High Temperature Superconductivity Arising in a Metal Sheet Full of Holes

Nobuyuki Zen

Subject: Physical Sciences, Condensed Matter Physics Keywords: Metal sheet; Phonon engineering; High Tc; Meissner effect; Giant atom; Hole superconductivity

Online: 9 September 2022 (04:01:57 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202208.0308.v1

Numerical Modelling of Diffusion Decomposition Processes

Alexey Sagalovych

Subject: Physical Sciences, Condensed Matter Physics Keywords: Diffusion decomposition; lsw; asymptotic behavior

Online: 17 August 2022 (08:44:03 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202105.0227.v2

Theoretical Derivation of Critical Current Density and Critical Magnetic Field Considering Many-Body Interactions of Magnetic Flux Quanta

Shinichi Ishiguri

Subject: Physical Sciences, Condensed Matter Physics Keywords: vortices; vortex physics; critical temperature; magnetic flux quantum; critical current density; critical magnetic field; many-body interaction

Online: 4 August 2022 (08:51:33 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202207.0437.v1

Effects of the Vertices on the Topological Bound States in a Quasicrystalline Topological Insulator

Simone Traverso, Niccolò Traverso Ziani, Maura Sassetti

Subject: Physical Sciences, Condensed Matter Physics Keywords: Higher order topological insulators; quasicrystals; bound states

Online: 28 July 2022 (09:24:17 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202207.0310.v1

Ab-initio Molecular Dynamics Simulation of the Changes in the Optical Properties of 2D MoS₂ When Doped with Pt at 300 K

Juan Manuel Ramírez-de-Arellano, Ali Fransuani Jiménez-González, Mónica Canales, Luis Fernando Magaña

Subject: Physical Sciences, Condensed Matter Physics Keywords: ab-initio; DFT calculations; 2D materials; MoS2; optical properties; platinum; FPMD

Online: 21 July 2022 (03:24:52 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202207.0269.v1

Analytical Derivations of Critical Temperatures in Every Type of Fe-Based Superconductors Based on Two Electrons’ Rotational Model

Shinichi Ishiguri

Subject: Physical Sciences, Condensed Matter Physics Keywords: Fe-based superconductor; critical temperature; transition temperature; attractive Lorentz force; Tc-dome diagram; structure transition; quantum critical point

Online: 18 July 2022 (11:03:33 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202207.0268.v1

Quantum Spin-Wave Theory for Non-collinear Spin Structures, a Review

Hung T. Diep

Subject: Physical Sciences, Condensed Matter Physics Keywords: Quantum Spin-Wave Theory; Frustrated Spin Systems; Non-Collinear Spin Configurations; Dzyaloshinskii-Moriya Interaction; Phase Transition; Green’s Function Theory; Monte Carlo Simulation

Online: 18 July 2022 (10:58:48 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202207.0074.v1

Properties of Bound Electron Pairs

Jacob Szeftel

Subject: Physical Sciences, Condensed Matter Physics Keywords: pairing symmetries

Online: 5 July 2022 (13:39:10 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202206.0416.v1

Surface and Electrical Characterization of Bilayers Based on BifeO₃and VO₂

Jhonatan Martínez, Edgar Mosquera-Vargas, Victor Fuenzalida, Marcos Flores, Gilberto Bolaños, Jesús Diosa

Subject: Physical Sciences, Condensed Matter Physics Keywords: Thin films; BiFeO3/VO2; Solid-solid interface; Surface characterization; Electrical property

Online: 30 June 2022 (06:16:25 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202206.0407.v1

Bifurcation of Solutions of Ornstein-Zernike Equation in the Gas-Liquid Coexistence Region of Simple Fluids

S.V.G. MENON

Subject: Physical Sciences, Condensed Matter Physics Keywords: Ornstein-Zernike equation; bifurcation of solutions; fold bifurcation points; liquid-vapor phase transition; coupling parameter expansion; Lennard-Jones potential

Online: 29 June 2022 (10:38:50 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202205.0411.v2

High Temperature Superconductivity Arising in a Metal Sheet Full of Holes

Nobuyuki Zen

Subject: Physical Sciences, Condensed Matter Physics Keywords: Metal sheet; Phonon engineering; High Tc; Meissner effect; Giant atom; Hole superconductivity

Online: 28 June 2022 (03:48:23 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202206.0301.v1

Antiferromagnet on Pyrochlore Lattice in Spherical Approximation

Raluca Stefania Bundaru

Subject: Physical Sciences, Condensed Matter Physics Keywords: phase transition; antiferromagnetism; spherical model

Online: 22 June 2022 (03:41:05 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202205.0411.v1

High Temperature Superconductivity Arising in a Metal Sheet Full of Holes

Nobuyuki Zen

Subject: Physical Sciences, Condensed Matter Physics Keywords: Metal sheet; Phonon engineering; High Tc; Meissner effect; Giant atom; Hole superconductivity

Online: 31 May 2022 (06:17:46 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202205.0366.v1

Electron-Phonon Coupling and Nonthermal Effects in Gold Nano-Objects at High Electronic Temperatures

Nikita Medvedev, Igor Milov

Subject: Physical Sciences, Condensed Matter Physics Keywords: Electron-phonon coupling; Nanoparticle; Ultrathin layer; Nonthermal melting; Tight-binding molecular dynamics; Boltzmann collision integrals; XTANT

Online: 26 May 2022 (10:44:54 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202205.0165.v1

Impact of Retardation in the Holstein-Hubbard Model: A Two-Site Calculation

Frank Marsiglio

Subject: Physical Sciences, Condensed Matter Physics Keywords: Superconductivity; Holstein-Hubbard model; pseudopotential effect; retardation

Online: 12 May 2022 (08:57:07 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202205.0150.v1

Effect of Ethylene Glycol:Citric Acid Molar Ratio and pH on the Morphology, Vibrational, Optical and Electronic Properties of TiO2 and CuO Powders Synthesized by Pechini Method

Mónica A. Vargas-Urbano, Lorena Marín, Winny Mónica Castillo, Luis Alfredo Rodríguez, César Magén, Milton Manotas-Albor, Jesús Evelio Diosa, Katherine Gross

Subject: Physical Sciences, Condensed Matter Physics Keywords: Pechini method; TiO2; CuO; anatase; tenorite; band gap; absorbance; diffuse reflectance; XPS

Online: 11 May 2022 (08:54:56 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint REVIEW | doi:10.20944/preprints202205.0113.v1

The Development of iDPC-STEM and Its Application in Electron Beam Sensitive Materials

Hongyi Wang, Linlin Liu, Jiaxing Wang, Chen Li, Jixiang Hou, Kun Zheng

Subject: Physical Sciences, Condensed Matter Physics Keywords: electron beam sensitive materials; electron microscopic characterization; low dose; iDPC-STEM

Online: 9 May 2022 (09:56:01 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202204.0280.v1

Phenomenological Potentials for the Refractory Metals Cr, Mo and W

Vassilis Pontikis, Gianguido Baldinozzi

Subject: Physical Sciences, Condensed Matter Physics Keywords: Chromium; Molybdenum; Tungstene; Empirical potentials; phonons; thermal properties

Online: 28 April 2022 (10:03:21 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202204.0251.v1

Granular Superconductivity in Hydrides under Pressure

Jorge Hirsch

Subject: Physical Sciences, Condensed Matter Physics Keywords: granular superconductors; trapped flux; hysteresis; magnetoresistance; critical current

Online: 27 April 2022 (08:03:11 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202204.0209.v1

On the Localization of Persistent Currents due to Trapped Magnetic Flux at the Stacking Faults of Graphite at Room Temperature

Regina Ariskina, Markus Stiller, Christian Precker, Winfried Böhlmann, Pablo D. Esquinazi

Subject: Physical Sciences, Condensed Matter Physics Keywords: defect-induced superconductivity; graphite; stacking faults; magnetic force microscopy

Online: 22 April 2022 (03:43:45 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202204.0108.v1

Parity Dependent Quantum Phase Transition in the Quantum Ising Chain in a Transverse Field

Daniel Sacco Shaikh, Maura Sassetti, Niccolò Traverso Ziani

Subject: Physical Sciences, Condensed Matter Physics Keywords: Ising model; quantum phase transitions; frustrated boundary conditions

Online: 12 April 2022 (10:16:12 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202202.0304.v2

Analytical Calculation of Superconducting Transition Temperatures Including a Complete Consideration of Many-Body Interactions and Non-equilibrium States

Shinichi Ishiguri

Subject: Physical Sciences, Condensed Matter Physics Keywords: non-equilibrium superconductivity; EPR-pair superconductivity; Many-body interaction; transition temperature; Lorentz conservations

Online: 17 March 2022 (12:09:08 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202202.0304.v1

Analytical Calculation of Superconducting Transition Temperatures Including a Complete Consideration of Many-Body Interactions and Non-equilibrium States

Shinichi Ishiguri

Subject: Physical Sciences, Condensed Matter Physics Keywords: non-equilibrium superconductivity; EPR-pair superconductivity; Many-body interaction; transition temperature; Lorentz conservations

Online: 24 February 2022 (08:31:58 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202202.0292.v1

Majorana Anyon Composites in Magneto-Photoluminescence Spectra of Natural Quantum Hall Puddles

Alexander. M. Mintairov, Dmitrii Lebedev, Alexei Vlasov, Steven Blundell

Subject: Physical Sciences, Condensed Matter Physics Keywords: quantum dots; magneto-photoluminescence; fractional quantum Hall effect; anyons; Majorana modes; topological quantum computing

Online: 23 February 2022 (12:12:12 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202202.0279.v1

Anomalous Ca-Content Dependence of Dielectric Property of Charge Ordered Pr1-xCaxMnO3 as a Signature of Charge-Ordered Phase Modulation

Partha Sarathi Mondal, Ankit Kumar Singh

Subject: Physical Sciences, Condensed Matter Physics Keywords: Manganite; Charge/Orbital ordering; Dielectric property; Polaron

Online: 22 February 2022 (14:30:41 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202202.0069.v1

Magnetic Entropic Forces Emerging in the System of Elementary Magnets Exposed to the Magnetic Field

Edward Bormashenko

Subject: Physical Sciences, Condensed Matter Physics Keywords: entropic force; magnetic field; linear system of elementary magnets; ordering; temperature; repulsion force.

Online: 4 February 2022 (10:43:15 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202202.0005.v2

Analysis Of Ac Magnetic Susceptibility Data Of A Room Temperature Superconductor

Jorge E. Hirsch

Subject: Physical Sciences, Condensed Matter Physics Keywords: hydride superconductor; room temperature superconductor; pressure; ac magnetic susceptibility; raw data; background signal

Online: 4 February 2022 (10:31:10 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202202.0005.v1

Analysis Of Ac Magnetic Susceptibility Data Of A Room Temperature Superconductor

Jorge Hirsch

Subject: Physical Sciences, Condensed Matter Physics Keywords: hydride superconductor; room temperature superconductor; pressure; ac magnetic susceptibility; raw data; background signal

Online: 1 February 2022 (11:59:19 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202201.0360.v1

An Overview of Radiation Induced Deep Level Defects in n-type 4H-SiC Studied by Junction Spectroscopy Techniques

Ivana Capan

Subject: Physical Sciences, Condensed Matter Physics Keywords: 4H-SiC; defects; radiation; DLTS

Online: 24 January 2022 (14:21:56 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202201.0336.v1

Otto Engine for the q-State Clock Model

Michel A. Aguilera, Francisco J. Peña, Oscar A. Negrete, Patricio Vargas

Subject: Physical Sciences, Condensed Matter Physics Keywords: q-state clock model; entropy; Berezinskii-Kosterlitz-Thouless transition; Otto engine; Mean- field approximation

Online: 24 January 2022 (09:28:39 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202107.0322.v3

Thermal Fluctuations and Electromagnetic Noise Spectra in Quantum Statistical Mechanics

Ladislaus Alexander Bányai, Mircea Bundaru, Paul Gartner

Subject: Physical Sciences, Condensed Matter Physics Keywords: fluctuations; noise spectra; longitudinal and transverse electric fields; Nyquist noise; photon number noise

Online: 17 January 2022 (09:04:34 CET)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints202112.0115.v2

Disconnect between Published AC Magnetic Susceptibility of a Room Temperature Superconductor and Measured Raw Data

Jorge E Hirsch

Subject: Physical Sciences, Condensed Matter Physics Keywords: room temperature superconductivity; magnetic susceptibility; diamagnetism; raw data

Online: 31 December 2021 (10:13:20 CET)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints202112.0409.v1

On Strongly Correlated Eelectrons in Metals

Jacob Szeftel

Subject: Physical Sciences, Condensed Matter Physics Keywords: inter-electron correlation; Fermi gas; BCS theory; lattice fermion models

Online: 24 December 2021 (15:53:24 CET)

Show abstract| Share

Preprint SHORT NOTE | doi:10.20944/preprints202112.0188.v2

Incompatibility of Published ac Magnetic Susceptibility of a Room Temperature Superconductor with Measured Raw Data

J. E. Hirsch

Subject: Physical Sciences, Condensed Matter Physics Keywords: hydride superconductor; room temperature superconductor; pressure; diamond anvil cell; ac magnetic susceptibility; raw data; background signal; random noise

Online: 21 December 2021 (09:00:23 CET)

Show abstract| Share

Preprint SHORT NOTE | doi:10.20944/preprints202112.0188.v1

Incompatibility of Published ac Magnetic Susceptibility of a Room Temperature Superconductor with Measured Raw Data

Jorge Hirsch

Subject: Physical Sciences, Condensed Matter Physics Keywords: hydride superconductor; magnetic susceptibility; raw data; background signal

Online: 10 December 2021 (14:08:48 CET)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints202112.0115.v1

Disconnect between Published AC Magnetic Susceptibility of a Room Temperature Superconductor and Measured Raw Data

Jorge E Hirsch

Subject: Physical Sciences, Condensed Matter Physics Keywords: room temperature superconductivity; magnetic susceptibility; diamagnetism; raw data

Online: 8 December 2021 (07:42:10 CET)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints202112.0072.v1

Theoretical, Unified Derivation of Both the Integer Quantum Hall Effect and Fractional Quantum Hall Effect

Shinichi Ishiguri

Subject: Physical Sciences, Condensed Matter Physics Keywords: Integer quantum Hall effect; Fractional quantum Hall effect; stationary wave; nodes in stationary wave; quantization of electric charge; the plateau of quantized resistivity

Online: 6 December 2021 (12:49:01 CET)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints202112.0055.v1

Reliability of the Ginzburg–Landau Theory in the BCS-BEC Crossover by Including Gaussian Fluctuations for 3D Attractive Fermions

Filippo Pascucci, Andrea Perali, Luca Salasnich

Subject: Physical Sciences, Condensed Matter Physics Keywords: Ginzburg–Landau theory; BCS-BEC crossover; pair fluctuations

Online: 3 December 2021 (13:55:24 CET)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints202111.0165.v1

Moiré Superconductivity and the Roeser-Huber Formula

Michael Rudolf Koblischka, Anjela Koblischka-Veneva

Subject: Physical Sciences, Condensed Matter Physics Keywords: Moiré Superconductors; twisted bilayer graphene; WSe2; superconducting transition temperature; Roeser-Huber formula

Online: 9 November 2021 (12:35:15 CET)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints202111.0074.v1

Isochoric Specific Heat in the Dual Model of Liquids

Fabio Peluso

Subject: Physical Sciences, Condensed Matter Physics Keywords: Liquid model; Phonons in liquids; Instantaneous Normal Modes; Mesoscopic model of liquids; Phonon – particle interaction; Specific heat

Online: 3 November 2021 (09:14:38 CET)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints202110.0427.v1

Role Played by Edge-Defects in the Optical Properties of Armchair Graphene Nanoribbons

Thi-Nga Do, Godfrey Gumbs, Danhong Huang, D. Hoi Bui, Po-Hsin Shih

Subject: Physical Sciences, Condensed Matter Physics Keywords: graphene nanoribbon; defects; absorption spectra

Online: 28 October 2021 (09:49:38 CEST)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints202110.0423.v1

M-Center in Neutron Irradiated 4H-SiC

Ivana Capan, Tomislav Brodar, Takahiro Makino, Vladimir Radulovic, Luka Snoj

Subject: Physical Sciences, Condensed Matter Physics Keywords: defects; 4H-SiC; DLTS; neutrons

Online: 27 October 2021 (18:23:02 CEST)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints202107.0322.v2

Thermal Fluctuations and Electromagnetic Noise Spectra in Quantum Statistical Mechanics

Ladislaus Alexander Bányai, Mircea Bundaru, Paul Gartner

Subject: Physical Sciences, Condensed Matter Physics Keywords: fluctuations; noise spectra; longitudinal and transverse electric fields; Nyquist noise; photon number noise

Online: 13 October 2021 (11:19:52 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202110.0083.v1

Multilayer Reflective Coatings for BEUV Lithography: A Review

Paul C. Uzhoma, Salman Shabir, Huan Hu, Paul C. Okonkwo, Oleksiy V. Penkov

Subject: Physical Sciences, Condensed Matter Physics Keywords: BEUV lithography; Multilayer mirrors; X-ray optics; reflectivity

Online: 5 October 2021 (12:44:49 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202005.0105.v3

Analytical Descriptions of High-T_c Cuprates by Introducing Rotating Holes and a New Model to Handle Many-Body Interactions

Shinichi Ishiguri

Subject: Physical Sciences, Condensed Matter Physics Keywords: high Tc cuprates; macroscopic Boson; many-body interactions; pseudo gap; critical temperature; anomaly metal phase; conservation of angular momentum; attractive force; Cooper pair

Online: 30 September 2021 (15:07:34 CEST)

Show abstract| Download PDF| Share

Working Paper ARTICLE

Dissipation Dependent Thermal Escape From a Macroscopic Quantum Potential Well

Chungho Cheng, Matteo Cirillo, Niels Gronbech-Jensen

Subject: Physical Sciences, Condensed Matter Physics Keywords: Macroscopic quantum phenomena; Tunnelling; Josephson effect

Online: 6 September 2021 (13:41:45 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202109.0076.v1

Informational Measure of Symmetry vs. Voronoi Entropy and Continuous Measure of Entropy of the Penrose Tiling. Part II of the “Voronoi Entropy vs. Continuous Measure of Symmetry of the Penrose Tiling”.

Edward Bormashenko, Irina Legchenkova, Mark Frenkel, Nir Shvalb, Shraga Shoval

Subject: Physical Sciences, Condensed Matter Physics Keywords: symmetry; informational measure; penrose tiling; Voronoi entropy; continuous symmetry measure; ordering

Online: 3 September 2021 (21:36:08 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202108.0530.v1

Electronic Transport Mechanisms Correlated to Structural Properties of a Reduced Graphene Oxide Sponge

Nicola Pinto, Benjamin A. McNaughton, Marco Minicucci, Milorad V. Milošević, Andrea Perali

Subject: Physical Sciences, Condensed Matter Physics Keywords: graphene; electronic transport; Raman

Online: 27 August 2021 (17:03:07 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202108.0377.v1

Magnetic Field Perturbations to a Soft X-Ray Activated Fe (II) Molecular Spin State Transition

Guanhua Hao, Alpha T. N'Diaye, Thilini K. Ekanayaka, Ashley S. Dale, Xuanyuan Jiang, Esha Mishra, Corbyn Mellinger, Saeed Yazdani, John W. Freeland, Jian Zhang, Ruihua Cheng, Xiaoshan Xu, Peter A. Dowben

Subject: Physical Sciences, Condensed Matter Physics Keywords: Spin crossover; Fe(II); activation barriers; X-ray excitation; magnetic field effects; [Fe{H2B(pz)2}2(bipy)]; molecular multiferroic.

Online: 18 August 2021 (11:30:12 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202108.0362.v1

Photothermal Effects and Heat Conduction in Nanogranular Silicon Films

Bayan A. Kurbanova, Gauhar K Mussabek, Viktor Y. Timoshenko, Vladimir Lysenko, Zhandos N. Utegulov

Subject: Physical Sciences, Condensed Matter Physics Keywords: silicon; nanogranular; nanoparticle; porous; void; thin film; laser heating; photo-thermal; temperature; Raman; phonons; heat conduction; phase transition; finite element modeling

Online: 17 August 2021 (10:45:12 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202107.0347.v2

Instability of Traveling Pulses in Nonlinear Diffusion-Type Problems and Method to Obtain Bottom-Part Spectrum of Schrödinger Equation with Complicated Potential

Michael I. Tribelsky

Subject: Physical Sciences, Condensed Matter Physics Keywords: nonlinear diffusion; traveling waves; stability; Goldstone modes; Shrödinger equation; spectrum of low-exited states

Online: 6 August 2021 (14:15:43 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202108.0161.v1

Understanding the Nature of the Long–Range Memory Phenomenon in Socio–Economic Systems

Rytis Kazakevičius, Aleksejus Kononovicius, Bronislovas Kaulakys, Vygintas Gontis

Subject: Physical Sciences, Condensed Matter Physics Keywords: long–range memory; 1/f noise; absolute value estimator; anomalous diffusion; ARFIMA; first–passage times; fractional Lèvy stable motion; Higuchi’s method; Mean squared displacement; multiplicative point process

Online: 6 August 2021 (11:22:25 CEST)

Show abstract| Download PDF| Share