• 文献标题:   Electronic viscosity and energy relaxation in neutral graphene
  • 文献类型:   Article
  • 作  者:   GALL V, NAROZHNY BN, GORNYI IV
  • 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:  
  • 被引频次:   1
  • DOI:   10.1103/PhysRevB.107.045413
  • 出版年:   2023

▎ 摘  要

We explore hydrodynamics of Dirac fermions in neutral graphene in the Corbino geometry. In the absence of a magnetic field, the bulk Ohmic charge flow and the hydrodynamic energy flow are decoupled. However, the energy flow does affect the overall resistance of the system through viscous dissipation and energy relaxation that has to be compensated by the work done by the current source. Solving the hydrodynamic equations, we find that local temperature and electric potential are discontinuous at the interfaces with the leads as well as the device resistance and argue that this makes Corbino geometry a feasible choice for an experimental observation of the Dirac fluid.