Crossover from crossing to tilted vortex phase in Bi(2)Sr(2)CaCu(2)O(8+ delta ) single crystals near ab-plane

In extremely anisotropic layered superconductors of Bi(2)Sr(2)CaCu(2)O(8+ delta ) the stacks of vortex pancakes (PV) and the Josephson vortex (JV) interpenetrate, and due to PV-JV mutual pinning energy, weakly interact and form various tilted and crossing lattice structures including vortex chains,...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2013-01, Vol.484, p.77-80
Main Authors: Mirkovic, Jovan, Buzdin, Alexandre, Kashiwagi, Takanari, Yamamoto, Takashi, Kadowaki, Kazuo
Format: Article
Language:English
Subjects:
BISMUTH OXIDE
Crossovers
FLUID FLOW
Lattices
LATTICES (CRYSTAL)
MAGNETIC PERMEABILITY
PERMEABILITY
Pinning
Single crystals
SUPERCONDUCTIVITY
SUPERCONDUCTORS
Vortices
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Summary:In extremely anisotropic layered superconductors of Bi(2)Sr(2)CaCu(2)O(8+ delta ) the stacks of vortex pancakes (PV) and the Josephson vortex (JV) interpenetrate, and due to PV-JV mutual pinning energy, weakly interact and form various tilted and crossing lattice structures including vortex chains, stripes, mixed chain + lattice phases, etc. In order to study these phenomena, it is decisive to have excellent quality of samples and the ideal experimental techniques. The vortex phases in high-quality Bi(2)Sr(2)CaCu(2)O(8+ delta ) single crystals were studied by in-plane resistivity measurement and local ac magnetic permeability. The sharp crossover was shown by both techniques, deep in the vortex solid state separating the Abrikosov dominant 'strong pinning' phase from the Josephson dominant 'weak pinning' phase. Those two vortex states were recognized as the mixed chain + lattice vortex phase and chains (tilted) vortex phase, respectively.
ISSN:0921-4534
DOI:10.1016/j.physc.2012.03.066