Print Email Facebook Twitter Superconductivity in the presence of microwaves Title Superconductivity in the presence of microwaves: Full phase diagram Author Tikhonov, K. S. (Skolkovo Institute of Science and Technology; L. D. Landau Institute for Theoretical Physics) Skvortsov, M. A. (Skolkovo Institute of Science and Technology; L. D. Landau Institute for Theoretical Physics) Klapwijk, T.M. (TU Delft QN/Klapwijk Lab) Date 2018 Abstract We address the problem of nonequilibrium superconductivity in the presence of microwave irradiation. Using contemporary analytical methods, we refine the old Eliashberg theory and generalize it to arbitrary temperatures T and frequencies ω. Microwave radiation is shown to stimulate superconductivity in a bounded region in the (ω,T) plane. In particular, for T<0.47Tc and for ω>3.3kBTc superconductivity is always suppressed by a weak ac driving. We also study the supercurrent in the presence of microwave irradiation and establish the criterion for the critical current enhancement. Our results can be qualitatively interpreted in terms of the interplay between the kinetic ("stimulation" vs "heating") and spectral ("depairing") effects of the microwaves. To reference this document use: http://resolver.tudelft.nl/uuid:12a53d59-d05d-4ecf-91bd-1ac35ab72d7c DOI https://doi.org/10.1103/PhysRevB.97.184516 ISSN 2469-9950 Source Physical Review B, 97 (18) Part of collection Institutional Repository Document type journal article Rights © 2018 K. S. Tikhonov, M. A. Skvortsov, T.M. Klapwijk Files PDF PhysRevB.97.184516.pdf 973.9 KB Close viewer /islandora/object/uuid:12a53d59-d05d-4ecf-91bd-1ac35ab72d7c/datastream/OBJ/view