Thermally assisted quantum vortex tunneling in the Hall and dissipative regime
Superconductivity
2009-11-07 v1
Abstract
Quantum vortex tunneling is studied for the case where the Hall and the dissipative dynamics are simultaneously present. For a given temperature, the magnetization relaxation rate is calculated as a function of the external current and the quasiparticle scattering time. The relaxation rate is solved analytically at zero temperature and obtained numerically at finite temperatures by the variational method. In the moderately clean samples, we have found that a minimum in the relaxation rate exists at zero temperature, which tends to disappear with increase in the temperature.
Keywords
Cite
@article{arxiv.cond-mat/0206285,
title = {Thermally assisted quantum vortex tunneling in the Hall and dissipative regime},
author = {Gwang-Hee Kim and Mincheol Shin},
journal= {arXiv preprint arXiv:cond-mat/0206285},
year = {2009}
}
Comments
18 pages, 9 figures, to be published in Phys. Rev. B