Abstract

We report on the dynamic ordering and lattice orientation of fast driven vortex matter for an amorphous MoxGe1−x film based on the measurements of the mode-locking resonance. With increasing the velocity, a rotation of the lattice orientation from a perpendicular to parallel orientation takes place, indicative of a dynamic transition. In the middle of the transition region the lattice orientation is neither parallel nor perpendicular, where a characteristic time for the vortex to travel one lattice spacing is τth ≍9 ns, which is close to the value obtained at smaller dc velocity. We suggest that τth reflects a quasiparticle recombination time.

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