title: Visualization of interacting crossing vortex lattices in the presence of quenched disorder.
abstract: We have imaged interacting crossing pancake vortex (PV) and Josephson vortex (JV) lattices in highly anisotropic Bi2Sr2CaCu2O(8+delta) single crystals under tilted magnetic fields. The dependence of vortex structures on in-plane field is in good quantitative agreement with theoretical predictions, yielding an almost temperature-independent anisotropy parameter of gamma=640+/-25. We directly confirm that the PV/JV attraction arises from small PV displacements in the presence of JV supercurrents and demonstrate how the existence of quenched disorder leads to indirect JV pinning and dynamic vortex fragmentation.
authors.affiliation: Department of Physics, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom.
authors.forename: A N
authors.initials: AN
authors.lastname: Grigorenko
authors.forename: S J
authors.initials: SJ
authors.lastname: Bending
authors.forename: A E
authors.initials: AE
authors.lastname: Koshelev
authors.forename: John R
authors.initials: JR
authors.lastname: Clem
authors.forename: T
authors.initials: T
authors.lastname: Tamegai
authors.forename: S
authors.initials: S
authors.lastname: Ooi