TY - JOUR
T1 - Asymmetric heat flow in mesoscopic magnetic system
AU - Saito, Keiji
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2006/3
Y1 - 2006/3
N2 - The characteristics of heat flow in a coupled magnetic system are studied. The coupled system is composed of a gapped chain and a gapless chain. The system size is assumed to be quite small so that the mean free path is comparable to it. When the parameter set of the temperatures of reservoirs is exchanged, the characteristics of heat flow are studied with the Keldysh Green function technique. The asymmetry of current is found in the presence of a local equilibrium process at the contact between the magnetic systems. The present setup is realistic and such an effect will be observed in real experiments. We also discuss the simple phenomenological explanation to obtain the asymmetry.
AB - The characteristics of heat flow in a coupled magnetic system are studied. The coupled system is composed of a gapped chain and a gapless chain. The system size is assumed to be quite small so that the mean free path is comparable to it. When the parameter set of the temperatures of reservoirs is exchanged, the characteristics of heat flow are studied with the Keldysh Green function technique. The asymmetry of current is found in the presence of a local equilibrium process at the contact between the magnetic systems. The present setup is realistic and such an effect will be observed in real experiments. We also discuss the simple phenomenological explanation to obtain the asymmetry.
KW - Heat flow control
KW - Quantum magnetic systems
KW - Quantum thermal conduction
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U2 - 10.1143/JPSJ.75.034603
DO - 10.1143/JPSJ.75.034603
M3 - Article
AN - SCOPUS:33847723881
VL - 75
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 3
M1 - 034603
ER -