Superconductivity in a planar field theory through the Kosterlitz-Thouless mechanism

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.3892· OSTI ID:6276828

MacKenzie, R; Panigrahi, P K; Sakhi, S ^[1]

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1. Laboratoire de Physique Nucleaire, Universite de Montreal, Montreal, Quebec, H3C 3J7 (Canada)

We present a (2+1)-dimensional model that exhibits superconductivity in the strong-coupling regime through the Kosterlitz-Thouless (KT) mechanism, with a nonzero critical temperature [ital T][sub [ital c]]. The model has three phases: a confined-vortex phase, which is superconducting at low temperatures, an intermediate-temperature phase with deconfined vortices, and an unbroken-symmetry phase at high temperatures. The ground state does not break [ital P] or [ital T] and the ratio of the energy gap to [ital T][sub [ital c]] is bigger than the conventional BCS value.

• OSTI ID: 6276828
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 48:6; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665410* -- Superconductivity-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY GAP
GAUGE INVARIANCE
HIGH-TC SUPERCONDUCTORS
INVARIANCE PRINCIPLES
KOSTERLITZ-THOULESS THEORY
MATHEMATICAL MODELS
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
SYMMETRY BREAKING
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VORTICES