Fermi blockade of the electron-phonon interaction: why strong coupling effects may not be seen in optimally doped high temperature superconductors
arXiv:2007.09888 · doi:10.1038/s41598-021-89059-w
Abstract
We study how manifestations of strong electron-phonon interaction (EPI) depend on the carrier concentration by solving the two-dimensional Holstein model for the spin-polarized fermions using an approximation free bold-line diagrammatic Monte Carlo (BDMC) method. We show that the strong EPI, obviously present at very small Fermion concentration, is masked by the Fermi blockade effects and Migdal's theorem to the extent that it manifests itself as moderate one at large carriers densities. Suppression of strong EPI fingerprints is in agreement with experimental observations in doped high temperature superconductors
arXiv comment8 pages, supplemental material is included
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- Dynamic Response of an Electron Gas: Towards the Exact Exchange-Correlation Kernel
- Polaron with Quadratic Electron-phonon Interaction
- Polarons with arbitrary nonlinear electron-phonon interaction
- Electron addition spectral functions of low-density polaron liquids
- Phonon-assisted insulator-metal transitions in correlated systems driven by doping