Mesoscopics in vortex core: level statistics and transport properties

Dissipation due to vortex motion in a strongly anisotropic type-II supercon ductor at low temperatures is studied. We focus on the moderately clean cas e of Delta(2)/E-F much less than tau(-1) much less than Delta and consider the low-velocity limit where dissipation is due to the Landau-Zener transit ions. It is shown that the flux-flow I(V) characteristic in the mixed state of a weakly coupled layered-superconductor can contain hysteretic branch, contrary to the cases of purely 2D and 3D superconductors. (C) 2000 Elsevie r Science B.V. All rights reserved.