Phase separation and pairing in coupled chains and planes

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.49.3629· OSTI ID:5222480

Riera, J A ^[1]

---

1. Center for Computationally Intensive Physics, Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6373 (United States) Department of Physics Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States)

A generalization of the [ital t]-[ital J] model in a system of two coupled chains or planes is studied by numerical diagonalization of small clusters. In particular, the effect of density fluctuations between these one- or two-dimensional coupled layers on intralayer phase separation and pairing is analyzed. The most robust signals of superconductivity are found at quarter filling for couplings just before the fully interlayer phase separated regime. The possibility of an enhancement of the intralayer superconducting pairing correlations by the interlayer couplings is investigated.

• DOE Contract Number: AC05-84OR21400; FG05-87ER40376
• OSTI ID: 5222480
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 49:5; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BINDING ENERGY
COUPLING
ENERGY
FLUCTUATIONS
HIGH-TC SUPERCONDUCTORS
LAYERS
MATHEMATICAL MODELS
PAIRING ENERGY
PHASE STUDIES
SUPERCONDUCTORS
VARIATIONS