Localization and delocalization in dirty superconducting wires

Citation
Pw. Brouwer et al., Localization and delocalization in dirty superconducting wires, PHYS REV L, 85(5), 2000, pp. 1064-1067
Citations number
23
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
85
Issue
5
Year of publication
2000
Pages
1064 - 1067
Database
ISI
SICI code
0031-9007(20000731)85:5<1064:LADIDS>2.0.ZU;2-I
Abstract
We present Fokker-Planck equations that describe transport of heat and spin in dirty unconventional superconducting quantum wires. Four symmetry class es are distinguished, depending on the presence or absence of time-reversal and spin-rotation invariance. In the absence of spin-rotation symmetry, he at transport is anomalous in that the mean conductance decays like 1/root L instead of exponentially fast for large enough length L of the wire. The F okker-Planck equations in the presence of time-reversal symmetry are solved exactly and the mean conductance for quasiparticle transport is calculated for the crossover from the diffusive to the localized regime.