Crossover from thermal to quantum creep in layered antiferromagnetic superconductor

Abstract

The influence of the antiferromagnetic order on the superconductor in the mixed state results in creation of spin-flop domains along the cores of the vortex lines. It is shown that this phenomenon makes possible crossover from quantum creep regime to thermal one, and vice versa, at constant temperature. To do this one needs to simply change the intensity or the direction of applied magnetic field in the basal ${\bf ab}$ plane of layered structure.Comment: 9 pages, Latex(elsart.cls), 2 figures. to be published in Physica C vol 340 nr 2/