Fermi surface and order parameter driven vortex lattice structure transitions in twin-free YBa2Cu3O7

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dc.creatorWhite, J. S.
dc.creatorHinkov, V.
dc.creatorHeslop, R. W.
dc.creatorLycett, R. J.
dc.creatorForgan, E. M.
dc.creatorBowell, C.
dc.creatorStraessle, S.
dc.creatorAbrahamsen, A. B.
dc.creatorLaver, M.
dc.creatorDewhurst, C. D.
dc.creatorKohlbrecher, J.
dc.creatorGavilano, J. L.
dc.creatorMesot, J.
dc.creatorKeimer, B.
dc.creatorErb, A.
dc.date2008-10-10
dc.date2009-03-05
dc.date.accessioned2026-07-07T12:48:52Z
dc.date.available2026-07-07T12:48:52Z
dc.descriptionWe report on small-angle neutron scattering studies of the intrinsic vortex lattice (VL) structure in detwinned YBa2Cu3O7 at 2 K, and in fields up to 10.8 T. Because of the suppressed pinning to twin-domain boundaries, a new distorted hexagonal VL structure phase is stabilized at intermediate fields. It is separated from a low-field hexagonal phase of different orientation and distortion by a first-order transition at 2.0(2) T that is probably driven by Fermi surface effects. We argue that another first-order transition at 6.7(2) T, into a rhombic structure with a distortion of opposite sign, marks a crossover from a regime where Fermi surface anisotropy is dominant, to one where the VL structure and distortion is controlled by the order-parameter anisotropy.
dc.description4 pages, 3 figures (2 color), minor changes
dc.identifierhttps://arxiv.org/abs/0810.1947
dc.identifierhttp://arxiv.org/abs/0810.1947
dc.identifierPhys. Rev. Lett. 102, 097001 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.097001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/222206
dc.subjectSuperconductivity
dc.titleFermi surface and order parameter driven vortex lattice structure transitions in twin-free YBa2Cu3O7
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