title: Static and dynamic coupling transitions of vortex lattices in disordered anisotropic superconductors.
abstract: We use three-dimensional molecular dynamics simulations of magnetically interacting pancake vortices to study vortex matter in disordered, highly anisotropic materials such as BSCCO. We observe a sharp 3D-2D transition from vortex lines to decoupled pancakes as a function of relative interlayer coupling strength, with an accompanying large increase in the critical current reminiscent of a second peak effect. We find that decoupled pancakes, when driven, simultaneously recouple and order into a crystalline-like state at high drives. We construct a dynamic phase diagram and show that the dynamic recoupling transition is associated with a double peak in dV/dI.
authors.affiliation: Department of Physics, University of California, Davis, California 95616, USA.
authors.forename: C J
authors.initials: CJ
authors.lastname: Olson
authors.forename: G T
authors.initials: GT
authors.lastname: Zimányi
authors.forename: A B
authors.initials: AB
authors.lastname: Kolton
authors.forename: N
authors.initials: N
authors.lastname: Grønbech-Jensen