Disorder induced non-Fermi liquid near a metal-superconductor quantum phase transition
| dc.creator | Vafek, Oskar | |
| dc.creator | Beasley, M. R. | |
| dc.creator | Kivelson, Steven A. | |
| dc.date | 2005-05-29 | |
| dc.date.accessioned | 2026-07-07T03:05:23Z | |
| dc.date.available | 2026-07-07T03:05:23Z | |
| dc.description | We study the flux-driven superconductor-metal transition in ultrasmall cylinders observed experimentally by Liu {\em et.al.}(Science 294, 2332 (2001)). Where $T_c\to 0$, there is a quantum critical point, and a large fluctuation conductivity is observed in the proximate metallic phase over a wide range of $T$ and flux . However, we find that the predicted (Gaussian) fluctuation conductivity in the neighborhood of the quantum critical point is 4 orders of magnitude smaller than observed experimentally. We argue that the breakdown of Anderson's theorem at any non-integer flux leads to a broad fluctuation region reflecting the existence of ``rare regions'' with local superconducting order. We calculate the leading order correction to the conductivity within a simple model of statistically induced Josephson coupled local ordered regions that rationalizes the existing data. | |
| dc.description | 4 pages; 1 figure | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0505688 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0505688 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/26428 | |
| dc.subject | Superconductivity | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.title | Disorder induced non-Fermi liquid near a metal-superconductor quantum phase transition | |
| dc.type | text |