Depinning and dynamic phases in driven three-dimensional vortex lattices in anisotropic superconductors

Journal Article · Sat Jan 01 04:00:00 EST 2000 · Physica C

DOI:https://doi.org/10.1016/S0921-4534(00)00794-2· OSTI ID:776592

Olson, C J ^[1]; Gronbech-Jensen, N

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1. LBNL Library

We use three-dimensional molecular dynamics simulations of magnetically interesting pancake vortices to study the dynamic phases of vortex lattices in highly anisotropic materials such as BSCCO. Our model treats the magnetic interactions of the pancakes exactly, with long-range logarithmic interactions both within and between planes. The pancake vortices decouple at low drives and show two-dimensional plastic flow. The vortex lattice both recouples and reorders as the driving current is increased, eventually forming a recoupled crystalline-like state at high drives. We construct a phase diagram as a function of interlayer coupling and show the relationship between the recoupling transition and the single-layer reordering transitions.

• Research Organization: Lawrence Berkeley National Lab., CA (US)
• Sponsoring Organization: USDOE Director, Office of Science. Office of Advanced Scientific Computing Research. Mathematical, Information, and Computational Sciences Division (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 776592
• Report Number(s): LBNL--45851
• Journal Information: Physica C, Journal Name: Physica C Journal Issue: PT2 Vol. 341
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
MOLECULAR DYNAMICS METHOD
PHASE DIAGRAMS
STRONTIUM OXIDES
SUPERCONDUCTORS
THREE-DIMENSIONAL CALCULATIONS
VORTICES