Floquet engineering triplet superconductivity in superconductors with spin-orbit coupling or altermagnetism
Phys. Rev. B 112, 024512 – Published 23 July, 2025
DOI: https://doi.org/10.1103/4tng-rhc4
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 first-order perturbation for a dynamical gap function and in the second-order perturbation for static gap functions. These results indicate optical generation and control of triplet superconductivity.
