Effective temperature in driven vortex lattices with random pinning.
We study numerically correlation and response functions in nonequilibrium driven vortex lattices with random pinning. From a generalized fluctuation-dissipation relation, we calculate an effective transverse temperature in the fluid moving phase. We find that the effective temperature decreases with increasing driving force and becomes equal to the equilibrium melting temperature when the dynamic transverse freezing occurs. We also discuss how the effective temperature can be measured experimentally from a generalized Kubo formula.
Kolton
Alejandro B
AB
Centro Atómico Bariloche, 8400 San Carlos de Bariloche, Río Negro, Argentina.
Exartier
Raphaël
R
Cugliandolo
Leticia F
LF
Domínguez
Daniel
D
Grønbech-Jensen
N
N