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Steady-state superconductivity in electronic materials with repulsive interactions

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Hart, O 
Goldstein, G 
Chamon, C 
Castelnovo, Claudio  ORCID logo  https://orcid.org/0000-0003-1752-6343

Abstract

We study the effect of laser driving on a minimal model for a hexagonal two-dimensional material with broken inversion symmetry. Through the application of circularly polarised light and coupling to a thermal free electron bath, the system is driven into a nonequilibrium steady state with asymmetric, nonthermal carrier populations in the two valleys. We show that, in this steady state, interband superconducting correlations between electrons can develop independent of the sign of the electron-electron interactions. We discuss how our results apply, for example, to transition metal dichalcogenides. This work opens the door to technological applications of superconductivity in a range of materials that were hitherto precluded from it.

Description

Keywords

cond-mat.str-el, cond-mat.str-el, cond-mat.supr-con

Journal Title

Physical Review B

Conference Name

Journal ISSN

2469-9950
2469-9969

Volume Title

100

Publisher

American Physical Society (APS)
Sponsorship
Engineering and Physical Sciences Research Council (EP/M007065/1)
Engineering and Physical Sciences Research Council (EP/P034616/1)