Asymmetric heat flow in mesoscopic magnetic system

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Abstract

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.

Original languageEnglish
Article number034603
JournalJournal of the Physical Society of Japan
Volume75
Issue number3
DOIs
Publication statusPublished - 2006 Mar 1

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Keywords

  • Heat flow control
  • Quantum magnetic systems
  • Quantum thermal conduction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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