Acoustic plasmons and isotropic short-range interaction in two-component electron liquids

Article

关键词: SUPERCONDUCTIVITY;    OSCILLATIONS;    WAVES;    GAS;   

DOI  :  10.1103/PhysRevB.106.224301

来源: SCIE

【 摘 要 】

Dispersion of acoustic plasmons and isotropic Landau parameters are calculated in three-and two-dimensional two-component electron-electron and electron-hole liquids at various concentration and mass ratios using the Landau-Silin kinetic equation and the random phase approximation for the self-energy. It is shown that the mode propagation and the strength of quasiparticle interaction are determined by the intercomponent screening and are asymmetric with respect to charge composition of two-component liquid. The well-defined acoustic plasmon-zero sound mode arises at strong difference in concentrations between components and its renormalization by the short-range exchange-correlation interaction is negligible. The acoustic plasmon mediated interparticle effective interaction in the fast component is weak in both the three-and two-dimensional electron liquids with parabolic dispersion, so the associated plasmonic superconductivity and the formation of acoustic plasmarons are unfavorable.

【 授权许可】

Free