Pairing instabilities in the two-dimensional Hubbard model

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.46.11163· OSTI ID:6996793

Chubukov, A V ^[1]; Lu, J P ^[2]

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1. Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801 (United States) P. L. Kapitza Institute For Physical Problems, Russian Academy of Sciences, 117334 ul. Kosygina 2, Moscow (Russia)
2. Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801 (United States)

We show that for low and moderate fillings the ground state of the two-dimensional Hubbard model with positive-{ital U} and nearest-neighbor hopping is unstable with respect to {ital d}-wave pairing with {ital d}{sub {ital x}{ital y}} symmetry of the gap wave function: {Delta}{similar to}sin{ital k}{sub {ital x}}sin{ital k}{sub {ital y}}. The inclusion of the next-neighbor hopping may either suppress the pairing or change the symmetry of the superconducting state.

• OSTI ID: 6996793
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 46:17; ISSN PRBMD; 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
CRYSTAL MODELS
D WAVES
ENERGY
ENERGY GAP
ENERGY LEVELS
GROUND STATES
HIGH-TC SUPERCONDUCTORS
HUBBARD MODEL
MATHEMATICAL MODELS
PAIRING ENERGY
PARTIAL WAVES
SUPERCONDUCTORS
TWO-DIMENSIONAL CALCULATIONS