J. Groth

Spatiotemporal dynamics and plastic flow of vortices in superconductors with periodic arrays of pinning sites.

We present simulations of flux-gradient-driven superconducting rigid vortices interacting with square and triangular arrays of columnar pinning sites in an increasing external magnetic field. These simulations allow us to quantitatively relate spatiotemporal microscopic information of the vortex lattice with typically measured macroscopic quantities, such as the magnetization {ital M}({ital H}). The flux lattice does not become completely commensurate with the pinning sites throughout the sample at the magnetization matching peaks, but forms a commensurate lattice in a region close to the edge of the sample. Matching fields related to unstable vortex configurations do not produce peaks in {ital M}({ital H}). We observe a variety of evolving complex flux profiles, including flat terraces or plateaus separated by winding current-carrying strings and, near the peaks in {ital M}({ital H}), plateaus only in certain regions, which move through the sample as the field increases. Several short videos, illustrating several particular cases of the type of dynamics described here, are available at http://www-personal.engin.umich.edu/--nori. {copyright} {ital 1996 The American Physical Society.}

Vortex plastic flow, local flux density, magnetization hysteresis loops, and critical current, deep in the Bose-glass and Mott-insulator regimes.

We present simulations of flux-gradient-driven superconducting vortices interacting with strong columnar pinning defects as an external field

Plastic flow, voltage noise and vortex avalanches in superconductors

H(t)

Vortex Plastic Motion in Twinned Superconductors

is quasi-statically swept from zero through a matching field

Microscopic derivation of magnetic-flux-density profiles, magnetization hysteresis loops, and critical currents in strongly pinned superconductors

B_{\phi}

Erratum: Spatiotemporal dynamics and plastic flow of vortices in superconductors with periodic arrays of pinning sites [Phys. Rev. B 54, 16 108 (1996)]

. We analyze several measurable quantities, including the local flux density

Dynamic and Commensurate Effects of Vortices Interacting with Square and Triangular Pinning Arrays.

B(x,y,H(t))

Dynamic Phases in Driven Vortex Lattices Interacting with Twin Boundaries and Line Defects.

, magnetization

Critical Transverse Force and Voltage Plateaus in Strongly Driven Vortex Lattices Interacting with Periodic Pinning Arrays.

M(H(t))

Large-Scale Numerical Simulations of Flux Dynamics and Critical Currents in Pinned Superconductors

, critical current