Intrinsic dissipative Floquet superconductors beyond mean-field theory

Dong E. Liu; Qinghong Yang; Zhesen Yang

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arxiv 2009.08351 v2 pith:RHQ5F3TX submitted 2020-09-17 cond-mat.supr-con cond-mat.mes-hall

Intrinsic dissipative Floquet superconductors beyond mean-field theory

Qinghong Yang , Zhesen Yang , Dong E. Liu This is my paper

classification cond-mat.supr-con cond-mat.mes-hall

keywords floquetbosonicdissipativeintrinsicbeyondcondensationdissipationsmean-field

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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.

Intrinsic dissipative Floquet superconductors beyond mean-field theory

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