MEAN-FIELD THEORY APPLIED TO THE HIGH-T-C SUPERCONDUCTIVITY

Authors
Citation
S. Gaona et Pr. Silva, MEAN-FIELD THEORY APPLIED TO THE HIGH-T-C SUPERCONDUCTIVITY, Physica status solidi. b, Basic research, 206(2), 1998, pp. 759-766
Citations number
26
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
03701972
Volume
206
Issue
2
Year of publication
1998
Pages
759 - 766
Database
ISI
SICI code
0370-1972(1998)206:2<759:MTATTH>2.0.ZU;2-Z
Abstract
We propose an effective transverse Ising model (TIM) as a means to tre at both metallic and high-temperature superconductivity. The model is inspired by features which are present in the Gorter-Casimir two-fluid model of superconductivity, but it encompasses also the formalism use d to treat the phase transitions in hydrogen-bonded ferroelectrics. We treat the model in the random-phase approximation, and as a consequen ce, the superconducting state reveals a structure of a gas of elementa ry excitations where the energy gap appears in a quite natural way.