Dynamical Cooper pairing in non-equilibrium electron-phonon systems
Superconductivity
2016-12-16 v3 Strongly Correlated Electrons
Quantum Physics
Abstract
We analyze Cooper pairing instabilities in strongly driven electron-phonon systems. The light-induced non-equilibrium state of phonons results in a simultaneous increase of the superconducting coupling constant and the electron scattering. We demonstrate that the competition between these effects leads to an enhanced superconducting transition temperature in a broad range of parameters. Our results may explain the observed transient enhancement of superconductivity in several classes of materials upon irradiation with high intensity pulses of terahertz light, and may pave new ways for engineering high-temperature light-induced superconducting states.
Cite
@article{arxiv.1511.07874,
title = {Dynamical Cooper pairing in non-equilibrium electron-phonon systems},
author = {Michael Knap and Mehrtash Babadi and Gil Refael and Ivar Martin and Eugene Demler},
journal= {arXiv preprint arXiv:1511.07874},
year = {2016}
}
Comments
15 pages, 7 figures