Vortices Freeze like Window Glass: the Vortex Molasses Scenario

Details Vortices Freeze like Window Glass: the Vortex Molasses Scenario Vortices Freeze like Window Glass: the Vortex Molasses Scenario

1999-10-21

arxiv.org/abs/cond-mat/9910314v1

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.84.1994

We overview several recent experimental and numerical observations, which are at odds with the Vortex Glass theory of the freezing of disordered vortex matter. To reinvestigate the issue, we performed numerical simulations of the overdamped London - Langevin model, and use finite size scaling to analyze the data. Upon approaching the transition the initial Vortex Glass type criticality is arrested at some crossover temperature. Below this temperature the timescales continue growing very quickly, consistent with the Vogel-Fulcher form, while the spatial correlation length xi stops exhibiting any observable divergence. We call this mode of freezing the Vortex Molasses scenario.

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