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Thermal transport across metal-insulator interface via electron-phonon interaction

Authors
  • Zhang, Lifa
  • Lü, Jing-Tao
  • Wang, Jian-Sheng
  • Li, Baowen
Type
Published Article
Publication Date
Sep 12, 2013
Submission Date
Sep 12, 2013
Identifiers
DOI: 10.1088/0953-8984/25/44/445801
Source
arXiv
License
Unknown
External links

Abstract

The thermal transport across metal-insulator interface can be characterized by electron-phonon interaction through which an electron lead is coupled to a phonon lead if phonon-phonon coupling at the interface is very weak. We investigate the thermal conductance and rectification flowing between the electron part and the phonon part using nonequilibrium Green's function method. It is found that the thermal conductance has a nonmonotonic behavior as a function of average temperature or the coupling strength between the phonon leads in the metal part and the insulator one. The metal-insulator interface shows evident thermal rectification effect, which can reverse with changing of average temperature or the electron-phonon coupling.

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