Dynamics of superconducting vortices driven by oscillatory forces in the plastic-flow regime”, Phys. Rev. B 84, 012508 (2011)

1. D. PÉREZ DAROCA, G. S. LOZANO, G. PASQUINI AND V. BEKERIS

PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS

American Physicl Society

Lugar: New York; Año: 2011 vol. 84 p. 12508 - 12511

0163-1829

We study experimentally and theoretically, the reorganization of superconducting vortices driven by oscillatory forces near the plastic depinning transition. We show that the system can be taken to configurations that are tagged by the shaking parameters but keep no trace of the initial conditions. In experiments performed in NbSe2 crystals, the periodic drive is induced by ac magnetic shaking fields and the overall order of the resulting configuration is determined by noninvasive ac susceptibility measurements. With a model of interacting particles driven over random landscapes, we perform molecular dynamics simulations that reveal the nature of the shaking dynamics as fluctuating states similar to those predicted for other interacting particle systems.