Quantum Hall effects in layered disordered superconductors
Mesoscale and Nanoscale Physics
2009-11-10 v1 Superconductivity
Abstract
Layered singlet paired superconductors with disorder and broken time reversal symmetry are studied. The phase diagram demonstrates charge-spin separation in transport. In terms of the average intergrain transmission and the interlayer tunnelling we find quantum Hall phases with spin Hall coefficients of 0 and 2 separated by a spin metal phase. We identify a spin metal-insulator localization exponent as well as a spin conductivity exponent of ~0.9. In presence of a Zeeman term an additional phase with spin Hall coefficient of 1 appears.
Cite
@article{arxiv.cond-mat/0403207,
title = {Quantum Hall effects in layered disordered superconductors},
author = {V. Kagalovsky and B. Horovitz and Y. Avishai},
journal= {arXiv preprint arXiv:cond-mat/0403207},
year = {2009}
}
Comments
4 pages, 4 figures