Michel Pleimling - Virginia Tech #
Physical aging in disordered systems: High-\(T_c\) superconductors and 
ferromagnets #
Physical aging is generically encountered in systems far from 
equilibrium that evolve with slow dynamics. Well known examples can be 
found in structural glasses, spin glasses, magnetic systems, and 
colloids. Recent years have seen major breakthroughs in our 
understanding of aging processes in non-disordered systems. Progress in 
understanding aging in disordered systems has been much slower though. 
In this talk I discuss non-equilibrium relaxation in two different types 
of disordered systems: coarsening ferromagnets with disorder, 
characterized by a crossover from an initial power-law like growth of 
domains to a slower logarithmic growth regime, and interacting vortex 
lines in disordered type-II superconductors, where the interplay of 
vortex-vortex interaction and defect pinning results in a very rich 
non-equilibrium behavior.
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This work is supported by the US Department of Energy through grant 
DE-FG02-09ER46613.