Superconductivity from correlated hopping

Journal Article · Fri Sep 01 04:00:00 EDT 1995 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.52.6223· OSTI ID:115822

Batista, C D; Lema, F; Aligia, A A ^[1]

---

1. Comision Nacional de Energia Atomica, Centro Atomico Bariloche and Instituto Balseiro, 8400 Bariloche (Argentina)

We consider a chain described by a next-nearest-neighbor hopping combined with a nearest-neighbor spin flip. In two dimensions this three-body term arises from a mapping of the three-band Hubbard model for CuO{sub 2} planes to a generalized {ital t}-{ital J} model and for large O-O hopping favors resonance-valence-bond superconductivity of predominantly {ital d}-wave symmetry. Solving the ground-state and low-energy excitations by analytical and numerical methods we find that the chain is a Luther-Emery liquid with correlation exponent {ital K}{sub {rho}}=(2{minus}{ital n}){sup 2}/2, where {ital n} is the particle density.

• OSTI ID: 115822
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 9 Vol. 52; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANALYTICAL SOLUTION
CORRELATED-PARTICLE MODELS
D WAVES
EXCITED STATES
GROUND STATES
HIGH-TC SUPERCONDUCTORS
HUBBARD MODEL
NUMERICAL SOLUTION
ONE-DIMENSIONAL CALCULATIONS
SPIN FLIP
SUPERCONDUCTIVITY