Vortex-lattice--vortex-liquid states in anisotropic high- T sub c superconductors

Journal Article · Fri Feb 01 04:00:00 EST 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.43.2896· OSTI ID:5862971

Ivlev, B I; Kopnin, N B; Salomaa, M M ^[1]

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1. Low Temperature Laboratory, Helsinki University of Technology, SF-02150 Espoo, Finland (FI)

We investigate vortex-lattice structures in highly anisotropic superconductors for a situation where the vortices are slightly inclined with respect to the easy plane of the crystal. The equilibrium configuration is found to be a vortex lattice with a rhombic unit cell highly compressed along the direction perpendicular to the easy plane. The elastic modulus for a shear deformation along this direction is exponentially small, which should result in melting of the vortex lattice, already at quite low temperatures. We discuss the implications of our theoretical results for experiments on the angular dependence of the torque for anisotropic high-{ital T}{sub {ital c}} superconductors in an applied magnetic field.

• OSTI ID: 5862971
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:4; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
CRYSTAL LATTICES
CRYSTAL STRUCTURE
EQUATIONS
HIGH-TC SUPERCONDUCTORS
LONDON EQUATION
MAGNETIC FLUX
SUPERCONDUCTORS
VORTICES