Static and Dynamic Coupling Transitions of Vortex Lattices in Disordered Anisotropic Superconductors

Journal Article · Mon Dec 18 00:00:00 EST 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.85.5416· OSTI ID:40205900

Olson, C J; Zimanyi, G T; Kolton, A B

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 crystallinelike 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 .

• Sponsoring Organization: (US)
• OSTI ID: 40205900
• Journal Information: Physical Review Letters, Vol. 85, Issue 25; Other Information: Othernumber: PRLTAO000085000025005416000001; 068050PRL; PBD: 18 Dec 2000; ISSN 0031-9007
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CRITICAL CURRENT
PHASE DIAGRAMS
SUPERCONDUCTORS
VORTICES