Direct observation of the flux-line vortex glass phase in a type II superconductor

Abstract

The order of the vortex state in La_{1.9} Sr_{0.1} CuO_{4} is probed using muon spin rotation and small-angle neutron scattering. A transition from a Bragg glass to a vortex glass is observed, where the latter is composed of disordered vortex lines. In the vicinity of the transition the microscopic behavior reflects a delicate interplay of thermally-induced and pinning-induced disorder.

14 pages, 4 colour figures included

Cited by in corpus (3)

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• Doping dependence of the vortex glass and sublimation transitions in the high-$T_c$ superconductor La${}_{2-x}$Sr${}_x$CuO${}_4$ as determined from macroscopic measurements
• Typical versus average helicity modulus in the three-dimensional gauge glass: Understanding the vortex glass phase