Superconductive solutions for a two-band Hamiltonian

A canonical two-band BCS Hamiltonian containing a Fermi surface of [ital d] holes and [ital p] holes for the high-[ital T][sub [ital c]] cuprate oxides is examined and is shown to possess two superconducting gaps. It is also pointed out that the system admits a precursor phase of Cooper-pair droplet...

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Veröffentlicht in:	Physical review. B, Condensed matter Condensed matter, 1993-08, Vol.48 (6), p.4047-4053
1. Verfasser:	CHAKRAVERTY, B. K
Format:	Artikel
Sprache:	eng
Schlagworte:	665410 - Superconductivity- (1992-) BCS THEORY Bcs theory and its development CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Condensed matter: electronic structure, electrical, magnetic, and optical properties COOPER PAIRS COPPER COMPOUNDS CUPRATES DROPLETS ENERGY GAP ENERGY LEVELS Exact sciences and technology FERMI LEVEL HIGH-TC SUPERCONDUCTORS HOLES OXYGEN COMPOUNDS PARTICLES PHYSICAL PROPERTIES Physics Properties of type I and type II superconductors Response to electromagnetic fields (nuclear magnetic resonance, surface impedance, etc.) Superconductivity SUPERCONDUCTORS Theory and models of superconducting state THERMODYNAMIC PROPERTIES TRANSITION ELEMENT COMPOUNDS TRANSITION TEMPERATURE
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Zusammenfassung:	A canonical two-band BCS Hamiltonian containing a Fermi surface of [ital d] holes and [ital p] holes for the high-[ital T][sub [ital c]] cuprate oxides is examined and is shown to possess two superconducting gaps. It is also pointed out that the system admits a precursor phase of Cooper-pair droplets that undergoes a phase-locking transition at a critical temperature below the mean-field solution. Recent NMR and neutron-scattering results are discussed.
ISSN:	0163-1829 1095-3795
DOI:	10.1103/PhysRevB.48.4047