Martínez-Rojas, P.; Benavides-Vergara, M.E.; Peña, F.J.; Vargas, P. Caloric Effect Due to the Aharonov–Bohm Flux in an Antidot. Nanomaterials2023, 13, 2714.
Martínez-Rojas, P.; Benavides-Vergara, M.E.; Peña, F.J.; Vargas, P. Caloric Effect Due to the Aharonov–Bohm Flux in an Antidot. Nanomaterials 2023, 13, 2714.
Martínez-Rojas, P.; Benavides-Vergara, M.E.; Peña, F.J.; Vargas, P. Caloric Effect Due to the Aharonov–Bohm Flux in an Antidot. Nanomaterials2023, 13, 2714.
Martínez-Rojas, P.; Benavides-Vergara, M.E.; Peña, F.J.; Vargas, P. Caloric Effect Due to the Aharonov–Bohm Flux in an Antidot. Nanomaterials 2023, 13, 2714.
Abstract
In this work, we report the caloric effect for an electronic system of the antidot type, modeled by combining a repulsive and attractive potential (parabolic confinement). In this system, we consider the action of a perpendicular external magnetic field and the possibility of having an Aharonov-Bohm flux (AB-flux) generated by a current passing through a solenoid placed inside the forbidden zone for the electron. The energy levels are obtained analytically, and the model is known as the Bogachek and Landman model. We propose to control the caloric response of the system by varying only the AB-flux, finding that in the absence of an external magnetic field, the maximization of the effect always occurs at the same AB-flux intensity independent of the temperature while fixing the external magnetic field at a non-zero value breaks this symmetry and changes the point where the caloric phenomenon is maximized and is different depending on the temperature to which the process is carried. Due to the great diversity in technological applications that have antidots in electronics, the possibility of controlling their thermal response just by varying the intensity of the internal current inside the solenoid can be a platform of interest for experimental studies.
Keywords
Magnetocaloric Effect; Quantum Dot; Aharonov-Bohm
Subject
Physical Sciences, Thermodynamics
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.
