Helicity Modulus and Meissner Effect in a Fluctuating Type II Superconductor

Abstract

The helicity modulus for a fluctuating type II superconductor is computed within the elastic medium approximation, as a probe of superconducting phase coherence and the Meissner effect in the mixed state. We argue that at the vortex line lattice melting transition, there remains superconducting coherence parallel to the applied magnetic field, provided the vortex line liquid retains a finite shear modulus at finite wavevector.

10 pages, 0 figures, RevTex3.0, UR-93-ST01

References in corpus (2)

• Vortex Line Fluctuations in Model High Temperature Superconductors
• Phase Transitions and Vortex Line Entanglement in a Model High Temperature Superconductor

Cited by in corpus (11)

• The Flux-Line Lattice in Superconductors
• Absence of a Phase Transition in a Three--Dimensional Vortex Glass Model with Screening
• Onsager Loop-Transition and First Order Flux-Line Lattice Melting in High-$T_c$ Superconductors
• Superconducting Coherence in a Vortex Line Liquid; Simulations with Finite λ
• Hydrodynamics and Nonlocal Conductivities in Vortex States of Type II Superconductors
• Nonlinear Hydrodynamics of Disentangled Flux-Line Liquids
• Helicity Modulus and Fluctuating Type II Superconductors: Elastic Approximation and Numerical Simulations
• Vortex-line liquid phases: Longitudinal superconductivity in the lattice London model
• Superconducting Coherence and the Helicity Modulus in Vortex Line Models
• Entanglement in Dilute Flux Line Liquids
• Smecticlike phase for modulated XY spins in two dimensions