Resonant electron-phonon-electron interaction

TL;DR

This paper investigates how resonance conditions between electron transition energies and phonon energies can significantly enhance electron-phonon-electron interactions, influenced by electron anisotropy and spin-flip processes.

Contribution

It reveals the conditions under which resonance enhances EPEI and how electron anisotropy and self-energy corrections modulate this effect.

Findings

Resonance can increase EPEI by 1 to 2 times.

Anisotropic S-wave and dx2-y2 electrons enhance resonance effects.

Electron self-energy correction weakens resonance EPEI.

Abstract

The effect of the resonance of electron scattering energy difference and phonon energy on the electron-phonon-electron interaction (EPEI) is studied. Results show that the resonance of electron transition energy and phonon energy can enhance EPEI by a magnitude of 1 to 2. Moreover, the anisotropic S-wave electron or dx2-y2 electron can enhance resonance EPEI, and the self-energy correction of the electron will weaken resonance EPEI. Particularly, the asymmetrical spin-flip scattering process in k space can reduce the effect of electronic self-energy to enhance resonance EPEI