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Vortex pinning by competing disorder: bose-glass to vortex-glass crossover

Oussena, M., de Groot, P.A.J., Deligiannis, K., Volkozub, A.V., Gagnon, R. and Taillefer, L. (1996) Vortex pinning by competing disorder: bose-glass to vortex-glass crossover Physical Review Letters, 76, (14), pp. 2559-2562. (doi:10.1103/PhysRevLett.76.2559).

Record type: Article


Magnetization measurements have been used to study the Bose-glass to vortex-glass crossover in YBa2Cu3O7-x crystals by varying the angle theta between the field and the twin planes. Two critical angles theta L and theta K are found: For theta < theta L, vortices lock in to the twin planes; for theta L< theta < theta K, a kinked vortex structure occurs; for theta > theta K, hysteresis loops reproduce the magnetic response of the untwinned regions where pinning is produced by random point defects. The angles theta K and theta L depend only on the disorder in the untwinned regions and scale with [ Delta M( theta K)]-0.5, where Delta M( theta K) is the hysteresis width for theta > theta K.

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Published date: 1996


Local EPrints ID: 14744
PURE UUID: 29125295-3827-4721-9127-e5d07fcaac3f

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Date deposited: 04 Mar 2005
Last modified: 24 Jul 2017 16:36

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Author: M. Oussena
Author: P.A.J. de Groot
Author: K. Deligiannis
Author: A.V. Volkozub
Author: R. Gagnon
Author: L. Taillefer

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