Phase Fluctuations and Pseudogap Phenomena
| dc.creator | Loktev, Vadim M. | |
| dc.creator | Quick, Rachel M. | |
| dc.creator | Sharapov, Sergei G. | |
| dc.date | 2000-12-06 | |
| dc.date.accessioned | 2026-07-07T06:31:47Z | |
| dc.date.available | 2026-07-07T06:31:47Z | |
| dc.description | This article reviews the current status of precursor superconducting phase fluctuations as a possible mechanism for pseudogap formation in high-temperature superconductors. In particular we compare this approach which relies on the two-dimensional nature of the superconductivity to the often used $T$-matrix approach. Starting from simple pairing Hamiltonians we present a broad pedagogical introduction to the BCS-Bose crossover problem. The finite temperature extension of these models naturally leads to a discussion of the Berezinskii-Kosterlitz-Thouless superconducting transition and the related phase diagram including the effects of quantum phase fluctuations and impurities. We stress the differences between simple Bose-BCS crossover theories and the current approach where one can have a large pseudogap region even at high carrier density where the Fermi surface is well-defined. The Green's function and its associated spectral function, which explicitly show non-Fermi liquid behaviour, is constructed in the presence of vortices. Finally different mechanisms including quasi-particle-vortex and vortex-vortex interactions for the filling of the gap above $T_c$ are considered. | |
| dc.description | 129 pages, Elsart, 28 EPS figures; Physics Reports, in press. Authors related information under "http://nonlin.bitp.kiev.ua/~sharapov/superconductivity.html" | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0012082 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0012082 | |
| dc.identifier | Phys.Rept. 349 (2001) 1-123 | |
| dc.identifier | doi:10.1016/S0370-1573(00)00114-9 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/98709 | |
| dc.subject | Superconductivity | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Phase Fluctuations and Pseudogap Phenomena | |
| dc.type | text |