Morphology of the Superconducting Vortex Lattice in Ultrapure Niobium

S Muehlbauer; C Pfleiderer; P Boeni; M Laver; Edward Forgan; David Fort; U Keiderling; G Behr

doi:10.1103/PhysRevLett.102.136408

Morphology of the Superconducting Vortex Lattice in Ultrapure Niobium

S Muehlbauer, C Pfleiderer, P Boeni, M Laver, Edward Forgan, David Fort, U Keiderling, G Behr

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Abstract

The morphology of the superconducting flux line lattice (FLL) of Nb comprises gradual variations with various lock-in transitions and symmetry breaking rotations. We report a comprehensive small-angle neutron scattering study of the FLL in an ultrapure single crystal of Nb as a function of the orientation of the applied magnetic field. We attribute the general morphology of the FLL and its orientation to three dominant mechanisms; first, nonlocal contributions, second, the transition between open and closed Fermi surface sheets and, third, the intermediate mixed state between the Meissner and the Shubnikov phase.

Original language	English
Pages (from-to)	136408
Number of pages	1
Journal	Physical Review Letters
Volume	102
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.102.136408
Publication status	Published - 1 Apr 2009

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abstract = "The morphology of the superconducting flux line lattice (FLL) of Nb comprises gradual variations with various lock-in transitions and symmetry breaking rotations. We report a comprehensive small-angle neutron scattering study of the FLL in an ultrapure single crystal of Nb as a function of the orientation of the applied magnetic field. We attribute the general morphology of the FLL and its orientation to three dominant mechanisms; first, nonlocal contributions, second, the transition between open and closed Fermi surface sheets and, third, the intermediate mixed state between the Meissner and the Shubnikov phase.",

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AU - Forgan, Edward

AU - Fort, David

AU - Keiderling, U

AU - Behr, G

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N2 - The morphology of the superconducting flux line lattice (FLL) of Nb comprises gradual variations with various lock-in transitions and symmetry breaking rotations. We report a comprehensive small-angle neutron scattering study of the FLL in an ultrapure single crystal of Nb as a function of the orientation of the applied magnetic field. We attribute the general morphology of the FLL and its orientation to three dominant mechanisms; first, nonlocal contributions, second, the transition between open and closed Fermi surface sheets and, third, the intermediate mixed state between the Meissner and the Shubnikov phase.

AB - The morphology of the superconducting flux line lattice (FLL) of Nb comprises gradual variations with various lock-in transitions and symmetry breaking rotations. We report a comprehensive small-angle neutron scattering study of the FLL in an ultrapure single crystal of Nb as a function of the orientation of the applied magnetic field. We attribute the general morphology of the FLL and its orientation to three dominant mechanisms; first, nonlocal contributions, second, the transition between open and closed Fermi surface sheets and, third, the intermediate mixed state between the Meissner and the Shubnikov phase.

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JO - Physical Review Letters

JF - Physical Review Letters

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Morphology of the Superconducting Vortex Lattice in Ultrapure Niobium

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