• 文献标题:   Plasmonic tuning of near-field heat transfer between graphene monolayers
  • 文献类型:   Article
  • 作  者:   YING XZ, KAMENEV A
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   2469-9950 EI 2469-9969
  • 通讯作者地址:   Univ Minnesota
  • 被引频次:   0
  • DOI:   10.1103/PhysRevB.102.195426
  • 出版年:   2020

▎ 摘  要

We discuss the nonradiative heat transfer in a nonequilibrium double-layer graphene system. We show that at the neutrality point the heat exchange is dominated by the interlayer plasmon modes and derive analytic expressions for the heat current as a function of temperature and the interlayer separation. These results show that for a range of low temperatures the two graphene layers are a much more efficient heat exchanger than conventional metals. The physical reason behind this phenomenon is the presence of interband excitations with a large energy, and a small momentum in the graphene spectrum. The plasmonic mechanism of the heat transfer is sharply suppressed by electrostatic doping. This allows for tuning of the heat exchange by a small applied voltage between the two layers.