Simple Ginzburg-Landau Theory for Vortices in a Crystal Lattice

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.4490· OSTI ID:530239

Yeo, J; Moore, M A ^[1]

---

1. Department of Physics, University of Manchester, Manchester, M13 9PL (United Kingdom)

We study the Ginzburg-Landau model with a nonlocal quartic term as a simple phenomenological model for superconductors in the presence of coupling between the vortex lattice and the underlying crystal lattice. In mean-field theory, our model is consistent with a general oblique vortex lattice ranging from a triangular lattice to a square lattice. This simple formulation enables us to study the effect of thermal fluctuations in the vortex liquid regime. We calculate the structure factor of the vortex liquid nonperturbatively and find Bragg-like peaks with fourfold symmetry appearing in the structure factor even though there is only a short-range crystalline order. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 530239
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 23 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CRYSTAL LATTICES
FLUX QUANTIZATION
GINZBURG-LANDAU THEORY
MEAN-FIELD THEORY
STRUCTURE FACTORS
SUPERCONDUCTIVITY
VORTICES