Quantum Hall plateau transitions in disordered superconductors
Mesoscale and Nanoscale Physics
2009-10-31 v1
Abstract
We study a delocalization transition for non-interacting quasiparticles moving in two dimensions, which belongs to a new symmetry class. This symmetry class can be realised in a dirty, gapless superconductor in which time reversal symmetry for orbital motion is broken, but spin rotation symmetry is intact. We find a direct transition between two insulating phases with quantized Hall conductances of zero and two for the conserved quasiparticles. The energy of quasiparticles acts as a relevant, symmetry-breaking field at the critical point, which splits the direct transition into two conventional plateau transitions.
Cite
@article{arxiv.cond-mat/9812155,
title = {Quantum Hall plateau transitions in disordered superconductors},
author = {V. Kagalovsky and B. Horovitz and Y. Avishai and J. T. Chalker},
journal= {arXiv preprint arXiv:cond-mat/9812155},
year = {2009}
}
Comments
5 pages, Revtex with 3 embedded figures