Surface impedance theory for superconductors in large static magnetic fields

[摘要] A theory of electromagnetic absorption is presented to explainthe changes in surface impedance for Pippard superconductors (ξ_o≫λ)due to large static magnetic fields. The static magnetic field penetratingthe metal near the surface induces a momentum dependentpotential in Bogolubov's equations. Such a potential modifies a quasiparticle'swavefunction and excitation spectrum. These changes affectthe behavior of the surface impedance in a way that in large measureagrees with available observations.

[发布机构] University:California Institute of Technology;Department:Physics, Mathematics and Astronomy

[关键词] Physics