DYNAMICAL PHASE-TRANSITION IN A DRIVEN DISORDERED VORTEX LATTICE

Authors
RYU S HELLERQVIST M DONIACH S KAPITULNIK A STROUD D
Citation
S. Ryu et al., DYNAMICAL PHASE-TRANSITION IN A DRIVEN DISORDERED VORTEX LATTICE, Physical review letters, 77(25), 1996, pp. 5114-5117
Citations number
39
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
77
Issue
25
Year of publication
1996
Pages
5114 - 5117
Database
ISI
SICI code
0031-9007(1996)77:25<5114:DPIADD>2.0.ZU;2-8
Abstract
Using Langevin dynamics, we have investigated the dynamics of vortices in a disordered two-dimensional superconductor subjected to a uniform driving current. The results provide direct numerical evidence for a dynamical phase transition between a plastic flow regime and a moving ''hexatic glass.'' The simulated current-voltage characteristics an in excellent agreement with recent transport measurements on amorphous M o77Ge23 thin film superconductors.