Floquet engineering triplet superconductivity in superconductors with spin-orbit coupling or altermagnetism

Abstract

We study superconductivitiy under light irradiation based on the Floquet-Magnus expansion in the high-frequency regime. We find that, in spin-singlet superconductors with spin-orbit coupling, triplet superconductivity can be induced in the first-order perturbation for dynamical gap functions and the second-order perturbation for static gap functions. We also show that, in unitary triplet superconductors with altermagnetism, nonunitary triplet superconductivity can emerge in the firstorder perturbation for dynamical gap function and in the second-order perturbation for static gap functions. These results indicate optical generation and control of triplet superconductivity.

11 pages, 2 figures

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Cited by in corpus (6)

• Superconducting phenomena in systems with unconventional magnets
• Floquet engineering spin triplet states in unconventional magnets
• Light-induced odd-parity altermagnets on dimerized lattices
• Light-induced Floquet spin-triplet Cooper pairs in unconventional magnets
• Engineering subgap states in superconductors by the symmetry of altermagnetism
• Supercurrent-induced phonon angular momentum