J. Phys. IV France
Volume 131, December 2005
Page(s) 119 - 120
Publié en ligne 18 janvier 2006
International Workshop on Electronic Crystals
S. Brazovskii, P. Monceau and N. Kirova
J. Phys. IV France 131 (2005) 119-120

DOI: 10.1051/jp4:2005131026

Numerical study on "plastic flow - moving solid" transition of charge density waves in nonequilibrium steady state under external drive

T. Nogawa1, H. Yoshino2 and H. Matsukawa3

1  Division of Physics, Graduate School of Science, Hokkaido University, Kita-ku Kita 10-Jo Nishi 8-Chome, Sapporo, Hokkaido 060-0810, Japan
2  Department of Earth and Space Science, School of Science, Osaka University, Machikaneyama 1-1, Toyonaka, Osaka 560-0013, Japan
3  Department of Physics, College of Science and Engineering, Aoyama Gakuin University, Fuchinobe 5-10-1, Sagamihara, Kanagawa 229-8558, Japan

Dynamical phase transition of charge density waves between "plastic flow" and "moving solid" phases controlled by electric field is numerically studied based on the three dimensional driven random field XY model. We analyze a spatial configuration of local velocity and find a percolation transition of a co-moving domain. The critical driving force, however, logarithmically diverges with the observation time. The moving solid phase has a finite life time that grows exponentially with the driving force.

© EDP Sciences 2005