Giraldo-Neira, A.S.; Sosa-Giraldo, T.; Vinascos-Sánchez, J.A.; Morales Aramburo, Á.L.; Duque Echeverri, C.A.; Mora-Ramos, M.E.; Restrepo Arango, R.L. Nonlinear Optical Absorption of Impurities in Hexagonal Quantum Wires: Electric and Magnetic Field Effects. Preprints2023, 2023080656. https://doi.org/10.20944/preprints202308.0656.v1
APA Style
Giraldo-Neira, A.S., Sosa-Giraldo, T., Vinascos-Sánchez, J.A., Morales Aramburo, Á.L., Duque Echeverri, C.A., Mora-Ramos, M.E., & Restrepo Arango, R.L. (2023). Nonlinear Optical Absorption of Impurities in Hexagonal Quantum Wires: Electric and Magnetic Field Effects. Preprints. https://doi.org/10.20944/preprints202308.0656.v1
Chicago/Turabian Style
Giraldo-Neira, A.S., Miguel Eduardo Mora-Ramos and Ricardo León Restrepo Arango. 2023 "Nonlinear Optical Absorption of Impurities in Hexagonal Quantum Wires: Electric and Magnetic Field Effects" Preprints. https://doi.org/10.20944/preprints202308.0656.v1
Abstract
Intraband energy transitions of an electron in GaAs/AlGaAs hexagonal quantum well wires in the presence of external electric and magnetic fields are presented. We consider the effects of the revolve of the quantum well wires via a geometric factor that converts the quantum wires straight and symmetric with respect to the z−axis, into a curved wires that no longer has this symmetry. In addition, the influence of having a shallow donor impurity on (off) is calculated. The shape of this quantum string corresponds to the core/shell structure. The energy levels and wave functions of the electron in the heterostructure with a finite potential between the shells are calculated using the effective mass approximation and the finite element method. The calculations of the optical properties are obtained from the compact density matrix and an iterative method. The direction of the applied external fields is parallel (anti-parallel) to the z−direction. The results reveal a significant dependence of the physical properties calculated with the deformation parameter, the dimensions of the quantum well wires and the presence or not of the impurity. The electronic transitions are in a range between 4.90 meV to 41.50 meV under the effect of the electric field, this corresponds to a range of frequencies of optical responses between 1.20 to 10 THz, that is, the mid-infrared. For the magnetic field the range is between 1.24 meV to 14 meV, that is, in frequencies from 0.36 to 3.38 THz, that is, in the far-infrared.
Keywords
intraband energy transitions; optical absorption coefficients; hexagonal quantum well wires; GaAs/AlGaAs; core/shell structure
Subject
Physical Sciences, Condensed Matter Physics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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