Influence of a nonuniform thermal quench and circular polarized radiation on spontaneous current generation in superconducting rings
M. D. Croitoru, Brahim Lounis, A. I. Buzdin
Abstract
We theoretically study the nonequilibrium dynamics of the order parameter of a superconducting ring inhomogeneously quenched through its transition temperature. Numerical simulations based on spectral decomposition of the time-dependent Ginzburg-Landau equation reveal that current-carrying superconducting states can be generated in the ring under certain fast local temperature quench conditions. We also show that illumination of the ring with a circularly polarized electromagnetic radiation during rapid cooling strongly promotes the generation of current-carrying states with rotation directions controlled by the helicity of the radiation field.
Topics & Concepts
SuperconductivityPhysicsCondensed matter physicsRadiationHelicityCurrent (fluid)Rotation (mathematics)Thermal radiationThermalRing (chemistry)Magnetic fieldRelaxation (psychology)OpticsChemistryQuantum mechanicsThermodynamicsMathematicsOrganic chemistrySocial psychologyPsychologyGeometryMeteorologyPhysics of Superconductivity and MagnetismQuantum and electron transport phenomenaQuantum, superfluid, helium dynamics