J. Phys. IV France 09 (1999) Pr10-77-Pr10-80
Nonlinear conduction of sliding electronic crystals : Charge and spin density wavesS. Brazovski1, 2 and A. Larkin3, 2
1 Laboratoire de Physique Théorique et des Modèles Statistiques, CNRS, bâtiment 100, Université Paris-Sud, 91406 Orsay cedex, France
2 L. D. Landau Institute, Moscow, Russia
3 Theoretical Physics Institute, University of Minnesota, Minneapolis, MN 55455, U.S.A.
A model of local metastable states (MSs) due to the pinning induces plastic deformations allows to describe the nonlinear I - V curves in sliding density waves (DW). With increasing DW velocity v, the MSs of decreasing lifetimes τ ˜ 1/v are accessed. The characteristic second threshold field is reached when the shortest life time configurations are accessed by the fast moving DW. Thus the DW works as a kind of a "linear accelerator" testing virtual states.
© EDP Sciences 1999