Intrinsic dissipative Floquet superconductors beyond mean-field theory

Qinghong Yang; Zhesen Yang; Dong E. Liu

doi:10.1103/PhysRevB.104.014512

← Back to search

Intrinsic dissipative Floquet superconductors beyond mean-field theory

Qinghong Yang, Zhesen Yang, Dong E. Liu

DOI 10.1103/PhysRevB.104.014512 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

We study the intrinsic superconductivity in a dissipative Floquet electronic system in the presence of attractive interactions. Based on the functional Keldysh theory beyond the mean-field treatment, we find that the system shows a time-periodic bosonic condensation and reaches an intrinsic dissipative Floquet superconducting (SC) phase. Due to the interplay between dissipations and periodic modulations, the Floquet SC gap becomes “soft” and contains the diffusive fermionic modes with finite lifetimes. However, bosonic modes of the bosonic condensation are still propagating even in the presence of dissipations.