Electronic sound modes and plasmons in hydrodynamic two-dimensional metals

Article

关键词: SURFACE;    GAS;    GRAPHENE;    RESISTANCE;    DISPERSION;   

DOI  :  10.1103/PhysRevB.97.115449

来源: SCIE

【 摘 要 】

Using an analytically tractable kinetic model of a two-dimensional Fermi liquid of electrons, we characterize the crossovers among zero sound, first sound, and plasmons. For experimentally realized Fermi liquids in a hydrodynamic limit, both zero and first sound waves are essentially replaced by plasmons. The plasmon dispersion relation is robust against hydrodynamic effects up to acquiring the viscous-limited decay rate of a first sound wave in the hydrodynamic limit. We discuss implications for experiments in clean two-dimensional electron gases.

【 授权许可】

Free