Relaxation and Glassy Dynamics in Disordered Type-II Superconductors

Details Relaxation and Glassy Dynamics in Disordered Type-II Superconductors Relaxation and Glassy Dynamics in Disordered Type-II Superconductors

2011-06-06

arxiv.org/abs/1106.1130v2

Phys. Rev. B 84, 174509 (2011)

Physics

Condensed Matter

Superconductivity

12 pages, 9 figures

Scientific paper

10.1103/PhysRevB.84.174509

We study the non-equilibrium relaxation kinetics of interacting magnetic flux lines in disordered type-II superconductors at low temperatures by means of a three-dimensional elastic line model and Monte Carlo simulations. Investigating the vortex density and height autocorrelation functions as well as the flux line mean-square displacement, we observe the emergence of glassy dynamics, caused by the competing effects of vortex pinning due to point defects and long-range repulsive interactions between the flux lines. Our systematic numerical study allows us to carefully disentangle the associated different relaxation mechanisms, and to assess their relative impact on the kinetics of vortex matter at low temperatures.

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