Direct observation of the flux-line vortex glass phase in a type II superconductor
arXiv:cond-mat/0611608 · doi:10.1103/PhysRevLett.92.237004
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