Role of the impurity-potential range in disordered d-wave superconductors
| dc.creator | Dell'Anna, Luca | |
| dc.creator | Fabrizio, Michele | |
| dc.creator | Castellani, Claudio | |
| dc.date | 2006-12-14 | |
| dc.date.accessioned | 2026-07-07T07:47:16Z | |
| dc.date.available | 2026-07-07T07:47:16Z | |
| dc.description | We analyze how the range of disorder affects the localization properties of quasiparticles in a two-dimensional d-wave superconductor within the standard non-linear sigma-model approach to disordered systems. We show that for purely long-range disorder, which only induces intra-node scattering processes, the approach is free from the ambiguities which often beset the disordered Dirac-fermion theories, and gives rise to a Wess-Zumino-Novikov-Witten action leading to vanishing density of states and finite conductivities. We also study the crossover induced by internode scattering due to a short range component of the disorder, thus providing a coherent non-linear sigma-model description in agreement with all the various findings of different approaches. | |
| dc.description | 38 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0612364 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0612364 | |
| dc.identifier | J. Stat. Mech. P02014 (2007) | |
| dc.identifier | doi:10.1088/1742-5468/2007/02/P02014 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/124106 | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.subject | Statistical Mechanics | |
| dc.title | Role of the impurity-potential range in disordered d-wave superconductors | |
| dc.type | text |