Electrodynamics of a Superconductor Superlattice in the Mixed State
We study the electrodynamics of a superconductor superlattice consisting of layers of two kinds (wide layers with extremely weak pinning and very thin layers with-strong pinning), in a perpendicular magnetic field. The problem is treated with the nonlocality of the intervortex interaction and the Abrikosov-vortex elasticity simultaneously taken into account. The exact solution obtained for the surface impedance reveals a rather unusual behavior: By contrast with the monotonic dc magnetic-field dependence of the surface resistance rho(s) for a homogeneous superconductor, this dependence is non-monotonic monotonic (rho(s) is-proportional-to B for B almost-equal-to H(c1) and rho(s) is-proportional-to B-1/4 for B much greater than H(c1)) for the superconductor superlattice under study.
Keywords: high-tc superconductors ; surface impedance ; yba2cu3o7/prba2cu3o7 superlattices ; type-2 superconductors ; ii superconductors ; elastic energy ; vortex state ; flux creep ; transition ; inductions
Tagantsev, Ak Af Ioffe Phys Tech Inst,St Petersburg 194021,Russia
Cited References Count:22
Record created on 2006-08-21, modified on 2016-08-08