Evidences for pairing of nearly-free quasiparticles from paraconductivity in layered superconducting cuprates
| dc.creator | Caprara, S. | |
| dc.creator | Grilli, M. | |
| dc.creator | Leridon, B. | |
| dc.creator | Vanhacken, J. | |
| dc.date | 2007-05-24 | |
| dc.date | 2008-09-25 | |
| dc.date.accessioned | 2026-07-07T10:04:45Z | |
| dc.date.available | 2026-07-07T10:04:45Z | |
| dc.description | We revisit the Aslamazov-Larkin theory of paraconductivity in two dimensions, to distinguish its universal features from the specific features of nearly-free paired fermions. We show that both the numerical prefactor and the temperature dependence of the experimental paraconductivity in underdoped La_{2-x}Sr_xCuO_4 are only compatible with pairing of nearly-free fermionic quasiparticles. This conclusion is strengthened by the analysis of paraconductivity data in the presence of a finite magnetic field, from which we extract a rather low value of the critical field H_{c2}(T=0). | |
| dc.description | 4 pages, 4 figures, text extended, one fig. removed | |
| dc.identifier | https://arxiv.org/abs/0705.3520 | |
| dc.identifier | http://arxiv.org/abs/0705.3520 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/169793 | |
| dc.subject | Superconductivity | |
| dc.title | Evidences for pairing of nearly-free quasiparticles from paraconductivity in layered superconducting cuprates | |
| dc.type | text |