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Equilibration and Dynamic Phase Transitions of a Driven Vortex Lattice

2000; American Physical Society; Volume: 85; Issue: 15 Linguagem: Inglês

10.1103/physrevlett.85.3265

1092-0145

Zhili Xiao, Eva Y. Andrei, P. Shuk, M. Greenblatt,

Organic and Molecular Conductors Research

We report on the observation of two types of current driven transitions in metastable vortex lattices. The metastable states, which are missed in usual slow transport measurements, are detected with a fast transport technique in the vortex lattice of undoped 2H-NbSe2. The transitions are seen by following the evolution of these states when driven by a current. At low currents we observe an equilibration transition from a metastable to a stable state, followed by a dynamic crystallization transition at high currents.