Detecting superconductivity out-of-equilibrium
POSTER
Abstract
Pump-probe experiments on cuprates and similar systems suggest the existence of a transient superconducting state far above the critical temperature. This poses the question how to reliably identify the emergence of superconductivity, out-of-equilibrium. In our contribution we investigate this point by studying the non-equilibrium dynamics in an extended Hubbard model and by computing various observables, which are used in theory and experiment to identify superconductivity. We specifically show, that the time-dependent optical conductivity is not sufficient to distinguish between a dynamical induced superconductor or an enhanced metallic state. In turn, we suggest to utilize time-resolved ARPES experiments in the two-particle channel to probe for superconducting signatures.
*B.F. and D.M. thank the Max Planck-UBC-UTokyo Center for Quantum Materials for financial support. T.K.’s contribution was partially funded through an ERC Starting Grant under grant agreement No. 758935. We acknowledge financial support by the Deutsche Forschungsgemeinschaft (DFG) through SFB/CRC1073 (projects B03 and B07) and Research Unit FOR 1807 (project P7).This work was supported in part by the Los Alamos National Laboratory LDRD Program.
Presenters
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Benedikt Fauseweh
- Los Alamos National Laboratory
- Theoretical Division, Los Alamos National Laboratory