Longitudinal Disordering of Vortex Lattices in Anisotropic Superconductors
Vortex disordering in superconducting crystals is shown to be markedly sensitive to penetration-depth anisotropy. At low temperature and high magnetic field, the muon-spin-rotation spectra for the highly anisotropic Bi2Sr2CaCu2O8+δ material are found to be anomalously narrow and symmetric about the applied field, in a manner consistent with a layered vortex sublattice structure with pinning-induced misalignment between layers. In contrast, spectra for the less-anisotropic YBa2Cu3O7-δ compounds taken at comparable fields are broader and asymmetric, showing that the vortex lattices are aligned parallel to the applied-field direction.
MSU Digital Commons Citation
Harshman, D. R.; Brandt, E. H.; Fiory, Anthony T.; Inui, M.; Mitzi, David B.; Schneemeyer, Lynn; and Waszczak, Joseph V., "Longitudinal Disordering of Vortex Lattices in Anisotropic Superconductors" (1993). Department of Chemistry and Biochemistry Faculty Scholarship and Creative Works. 428.