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Magnetocaloric Effect in an Antidot: The Effect of the Aharonov-Bohm Flux and Antidot Radius

1
Departamento de Física, Universidad Técnica Federico Santa María, Valparaíso 2340000, Chile
2
Centro para el Desarrollo de la Nanociencia y la Nanotecnología, CEDENNA, Santiago 8320000, Chile
*
Author to whom correspondence should be addressed.
Entropy 2018, 20(11), 888; https://doi.org/10.3390/e20110888
Received: 11 October 2018 / Revised: 13 November 2018 / Accepted: 17 November 2018 / Published: 19 November 2018
(This article belongs to the Section Quantum Information)
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Abstract

In this work, we report the magnetocaloric effect (MCE) for an electron interacting with an antidot, under the effect of an Aharonov-Bohm flux (AB-flux) subjected to a parabolic confinement potential. We use the Bogachek and Landman model, which additionally allows the study of quantum dots with Fock-Darwin energy levels for vanishing antidot radius and AB-flux. We find that AB-flux strongly controls the oscillatory behaviour of the MCE, thus acting as a control parameter for the cooling or heating of the magnetocaloric effect. We propose a way to detect AB-flux by measuring temperature differences. View Full-Text
Keywords: magnetocaloric effect; quantum dot; Aharonov–Bohm magnetocaloric effect; quantum dot; Aharonov–Bohm
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Negrete, O.A.; Peña, F.J.; Vargas, P. Magnetocaloric Effect in an Antidot: The Effect of the Aharonov-Bohm Flux and Antidot Radius. Entropy 2018, 20, 888.

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