Perfect thermal rectification in a many-body quantum ising model
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Universidade Federal de Minas Gerais
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This paper addresses a keystone problem for the progress of phononics: the proposal of efficient thermal
diodes. Aiming the disclosure of an easy itinerary for the building of a heat rectifier, I investigate unsophisticated
systems linked to simple thermal baths, precisely, asymmetric quantum Ising models, i.e., simple quadratic
models, involving only one spin component. I analytically show the occurrence of thermal rectification for the
case of a chain with interactions long enough to connect the first to the last site. Moreover, I describe cases of
a perfect rectification, i.e., finite heat flow in one direction and zero current in the opposite direction. I argue to
indicate that the ingredients for the rectification are just given by the quantum nature of the baths and dynamics,
and by the structural asymmetry of the system, here in the intersite interactions. I believe that the description of a
perfect thermal rectification in a simple many-body quantum model, that is, the presentation of a simple itinerary
for the building of a diode shall stimulate theoretical and experimental research on the theme.
Abstract
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Retificação, Ising model
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Retificação, Ising model
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https://journals.aps.org/pre/abstract/10.1103/PhysRevE.99.032116