Premium
Two‐fluid model of superconducting condensates and spin gaps in d x 2 − y 2 ‐wave high T c cuprates from repulsive electronic correlations
Author(s) -
Dunne Lawrence J.,
Brändas Erkki J.
Publication year - 2004
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.20056
Subject(s) - cuprate , superconductivity , condensed matter physics , pairing , physics , spin (aerodynamics) , electronic structure , symmetry (geometry) , thermodynamics , mathematics , geometry
In this review, a model is presented that accounts in a simple way for the existence of the condensate and spin gap in high T c superconducting cuprates. The finding of many types of high T c superconducting cuprates occurred more than a decade ago, but the cause of the superconductivity and electronic structure of such materials remains controversial, and there is no broad agreement as to the origin of pairing or of the spin gap. Our view is that these are correlation effects in a weakly doped electronic system with the appropriate alternant C 4v symmetry, as found in the layers of high T c superconducting cuprates. This two‐fluid model can adequately describe much of the essential behavior of these strange materials. © 2004 Wiley Periodicals, Inc. Int J Quantum Chem, 2004