How Much Phase Coherence Does a Pseudogap Need?

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

It has been suggested that the ``pseudogap'' regime in cuprate superconductors, extending up to hudreds of degrees into the normal phase, reflects an incoherent d-wave pairing, with local superconducting order coherent over a finite length scale $ξ$, insufficient to establish superconductivity. We calculate the single-particle spectral density in such a state from a minimal phenomenological disordered BCS model. When the phase-coherence length exceeds the Cooper pair size, a clear pseudogap appears. The pseudogap regime, however, is found only over a relatively narrow range of phase stiffnesses, hence is not expected to extend more than about 20% above $T_c$.
RevTeX, 4 pages, 5 embedded PostScript figures

Keywords

Superconductivity, Strongly Correlated Electrons

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/18119

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0108146
 http://arxiv.org/abs/cond-mat/0108146

Collections

arXiv