Electron-phonon vertex and its influence on the superconductivity of two-dimensional metals on a piezoelectric substrate
arXiv:1601.04508 · doi:10.1103/PhysRevB.94.085423
Abstract
We investigate the interaction between the electrons of a two-dimensional metal and the acoustic phonons of an underlying piezoelectric substrate. Fundamental inequalities can be obtained from general energy arguments. As a result, phonon mediated attraction can be proven to never overcome electron Coulomb repulsion, at least for long phonon wavelengths. We study the influence of these phonons on the possible pairing instabilities of a two-dimensional electron gas such as graphene.
10 pages, 3 figures
References in corpus (6)
- The electronic properties of graphene
- Dynamical polarization of graphene at finite doping
- Plasmon-phonon coupling in graphene
- Piezoelectric surface acoustical phonon limited mobility of electrons in graphene on a GaAs substrate
- On peculiarities of superconductivity in the single-layer FeSe/SrTiO3 interfa
- Odd momentum pairing and superconductivity in vertical graphene heterostructures