Print Email Facebook Twitter Coherent Excited States in Superconductors due to a Microwave Field Title Coherent Excited States in Superconductors due to a Microwave Field Author Semenov, A. V. (Moscow Institute of Physics and Technology; Moscow State Pedagogical University) Devyatov, I. A. (Moscow State University; Moscow Institute of Physics and Technology) de Visser, P.J. (TU Delft QN/Klapwijk Lab; SRON Netherlands Institute for Space Research) Klapwijk, T.M. (TU Delft QN/Klapwijk Lab; Moscow State Pedagogical University) Date 2016-07-19 Abstract We describe theoretically the depairing effect of a microwave field on diffusive s-wave superconductors. The ground state of the superconductor is altered qualitatively in analogy to the depairing due to a dc current. In contrast to dc depairing, the density of states acquires, for microwaves with frequency ω0, steps at multiples of the photon energy Δ±n ω0 and shows an exponential-like tail in the subgap regime. We show that this ac depairing explains the measured frequency shift of a superconducting resonator with microwave power at low temperatures. To reference this document use: http://resolver.tudelft.nl/uuid:64f4a038-d7f9-4ecc-b08b-09394be494ba DOI https://doi.org/10.1103/PhysRevLett.117.047002 ISSN 0031-9007 Source Physical Review Letters, 117 (4), 1-5 Part of collection Institutional Repository Document type journal article Rights © 2016 A. V. Semenov, I. A. Devyatov, P.J. de Visser, T.M. Klapwijk Files PDF PhysRevLett.117.047002.pdf 347.59 KB Close viewer /islandora/object/uuid:64f4a038-d7f9-4ecc-b08b-09394be494ba/datastream/OBJ/view