Two-dimensional Bose liquid with strong gauge-field interaction

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.16641· OSTI ID:5722774

Feigelman, M V; Geshkenbein, V B ^[1]; Ioffe, L B ^[2]; Larkin, A I ^[3]

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1. Landau Institute of Theoretical Physics, Moscow (Russian Federation) Weizmann Institute of Science, Rehovot 76100 (Israel)
2. Department of Physics, Rutgers University, Piscataway, New Jersey 08855-0849 (United States)
3. AT T Bell Laboratories, Murray Hill, New Jersey 07974 (United States) Weizmann Institute of Science, Rehovot 76100 (Israel)

Two unrelated problems can be reduced to a model of a Bose gas interacting with a gauge field: (i) the effect of thermal fluctuations on a system of vortices in bulk superconductors in fields [ital H][sub [ital c]1][much lt][ital H][much lt][ital H][sub [ital c]2], and (ii) charged, spinless excitations in two-dimensional (2D) strongly correlated electron systems. Both problems are important for the theory of high-temperature superconductors. We study this model in three regimes: at finite temperatures, assuming that the gauge field is purely transverse; at [ital T]=0, for the purely static (2D Coulomb) interaction; and at [ital T]=0, for a weak Coulomb interaction and a strong transverse one. Transverse interactions suppress the temperature of the superfluid transition significantly. A sufficiently strong transvese interaction is shown to produce a phase separation as the temperature decreases (in the absence of Coulomb repulsion). If there is Coulomb repulsion, the ground state does not have off-diagonal long-range order but the superfluid density is not zero unless the Coulomb constant exceeds a critical value. Sufficiently strong coupling to the transverse field destroys superfluidity as well. In the normal state formed at large couplings, the translational invariance is intact. We propose a bosonic ground state that is not superfluid at [ital T]=0. We discuss the implications of these results both for vortex liquids and strongly correlated electron systems.

• OSTI ID: 5722774
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 48:22; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOSE-EINSTEIN GAS
ENERGY LEVELS
GROUND STATES
HIGH-TC SUPERCONDUCTORS
MATHEMATICAL MODELS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
SUPERFLUIDITY
TEMPERATURE ZERO K
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE