A mean field theory for the depinning transition in a driven layered charge density wave (CDW) taken as a prototype for a driven periodic structure is derived. The dynamics of the dislocations appearing in a 2D flowing system is investigated. This indicates that the disorder induces a Kardar-Parisi-Zhang nonlinearity which gives rise to a nontrivial screening of interactions between dislocations resulting in the proliferation of free dislocations, and therefore, in an instability of the 2D driven lattices.
|Original language||English (US)|
|Journal||Journal De Physique. IV : JP|
|State||Published - 1999|
|Event||Proceedings of the 1999 International Workshop on ELectronic Crystals (ECRYS-99) - La Colle-sur-Loup, France|
Duration: May 31 1999 → Jun 5 1999
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)