Vortices and 2D bosons: A Path-Integral Monte Carlo Study

Preprint

22 April 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9612025

Abstract

The vortex system in a high-T_c superconductor has been studied numerically using the mapping to 2D bosons and the path-integral Monte Carlo method. We find a single first-order transition from an Abrikosov lattice to an entangled vortex liquid. The transition is characterized by an entropy jump dS = 0.4 k_B per vortex and layer (parameters for YBCO) and a Lindemann number c_L = 0.25. The increase in density at melting is given by d\rho = 6.0*10^{-4} / \lambda(T)^2. The vortex liquid corresponds to a bosonic superfluid, with \rho_s = \rho even in the limit \lambda -> \infty.

Keywords

All Related Versions

Version 1, 1996-12-02, ArXiv
Version 2, 1996-12-16, ArXiv
Version 3, 1997-04-22, ArXiv
Published version: Physical Review Letters, 79 (10), 1925.

This publication has 0 references indexed in Scilit: