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

Vortex pinning by competing disorder: bose-glass to vortex-glass crossover
Vortex pinning by competing disorder: bose-glass to vortex-glass crossover
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.
2559-2562
Oussena, M.
6f73ee0e-91d9-4de7-8664-652fe5c548c8
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Deligiannis, K.
d435ff0e-26e2-4656-94d3-2f588348efd9
Volkozub, A.V.
14669ef6-0b06-4e31-8645-35d70a7f20e6
Gagnon, R.
a45ce1df-0d8e-49c8-a86e-faeddd7b426a
Taillefer, L.
f034a4d8-8435-4448-a2e7-bebf79590f75
Oussena, M.
6f73ee0e-91d9-4de7-8664-652fe5c548c8
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Deligiannis, K.
d435ff0e-26e2-4656-94d3-2f588348efd9
Volkozub, A.V.
14669ef6-0b06-4e31-8645-35d70a7f20e6
Gagnon, R.
a45ce1df-0d8e-49c8-a86e-faeddd7b426a
Taillefer, L.
f034a4d8-8435-4448-a2e7-bebf79590f75

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), 2559-2562. (doi:10.1103/PhysRevLett.76.2559).

Record type: Article

Abstract

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

Identifiers

Local EPrints ID: 14744
URI: https://eprints.soton.ac.uk/id/eprint/14744
PURE UUID: 29125295-3827-4721-9127-e5d07fcaac3f

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Date deposited: 04 Mar 2005
Last modified: 30 Jul 2019 17:50

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