Quasiparticle gap in a two-dimensional Kosterlitz-Thouless superconductor

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

DOI:https://doi.org/10.1103/PhysRevB.45.7544· OSTI ID:7297639

Moreo, A; Scalapino, D J ^[1]; White, S R ^[2]

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1. Department of Physics, University of California, Santa Barbara, California 93106-9530 (United States)
2. Department of Physics, University of California, Irvine, California 92717 (United States)

The negative-{ital U} Hubbard model, doped away from half filling, is believed to undergo a Kosterlitz-Thouless transition into a superconducting state with power-law pair-field correlations. We have used numerical simulation techniques to calculate the temperature dependence of the spin susceptibility and the single-particle density of states. These quantities show that a gap in the single-particle spectrum develops for a two-dimensional layer in the Kosterlitz-Thouless state.

• DOE Contract Number: FG03-85ER45197
• OSTI ID: 7297639
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 45:13; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

665410* -- Superconductivity-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR MOMENTUM
COMPUTERIZED SIMULATION
CORRELATION FUNCTIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY GAP
FUNCTIONS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
QUASI PARTICLES
SIMULATION
SPIN
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE