Translational correlations in the vortex array at the surface of a type-II superconductor

M. Cristina Marchetti, David R. Nelson

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

We discuss the statistical mechanics of magnetic flux lines in a finite-thickness slab of type-II superconductor. The long-wavelength properties of a flux-line liquid in a slab geometry are described by a hydrodynamic free energy that incorporates the boundary conditions on the flux lines at the sample's surface as a surface contribution to the free energy. Bulk and surface weak disorder are modeled via Gaussian impurity potentials. This free energy is used to evaluate the two-dimensional structure factor of the flux-line tips at the sample surface. We find that surface interaction always dominates in determining the decay of translational correlations in the asymptotic long-wavelength limit. On the other hand, such large length scales have not been probed by the decoration experiments. Our results indicate that the translational correlations extracted from the analysis of the Bitter patterns are indeed representative of behavior of flux lines in the bulk.

Original languageEnglish (US)
Pages (from-to)12214-12223
Number of pages10
JournalPhysical Review B
Volume47
Issue number18
DOIs
StatePublished - 1993

ASJC Scopus subject areas

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Translational correlations in the vortex array at the surface of a type-II superconductor'. Together they form a unique fingerprint.

  • Cite this