Eur. Phys. J. B 34, 173-177 (2003)
https://doi.org/10.1140/epjb/e2003-00209-1

Continuous melting of a driven two-dimensional flux lattice with strong pins

Laboratoire de Physique des Solides, CNRS, Université Paris-Sud, bâtiment 510, 91405 Orsay Cedex, France

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Received: 21 March 2003
Revised: 27 May 2003
Published online: 4 August 2003

Abstract

The phase diagram of a driven two-dimensional vortex lattice in the presence of dense quasi-point pins is investigated. The transition from the crystal to the liquid is found continuous at intermediate inductions. The correlations in the pseudo random force that allow for an uncomplete unbinding of the dislocations is proposed as a key mechanism to account for the continuous transition.