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Onset of plasticity and hardening of the hysteretic response in the vortex system of YBa2Cu3O7- delta

Onset of plasticity and hardening of the hysteretic response in the vortex system of YBa2Cu3O7- delta
Onset of plasticity and hardening of the hysteretic response in the vortex system of YBa2Cu3O7- delta
A method based on partial magnetization loops has been used to study memory effects in detwinned YBa2Cu3O(7-delta) single crystals. These measurements have revealed the transition from a dislocation-free Bragg glass to a disordered vortex phase. We have mapped this boundary in the B-T phase diagram and have found it to be in proximity to the onset of the second magnetization peak. For fields above the transition line, metastable topological disorder invades the vortex system leading to a pronounced dependence of the critical current on the formation history of the vortex lattice.
5116-5119
Kokkaliaris, S.
e8e48a61-67b7-4d87-ac4c-a1d6d5c26b3e
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Gordeev, S.N.
2d51d5e7-5fbd-4753-8eb8-a21ff61deb07
Zhukov, A.A.
75d64070-ea67-4984-ae75-4d5798cd3c61
Gagnon, R.
a45ce1df-0d8e-49c8-a86e-faeddd7b426a
Taillefer, L.
f034a4d8-8435-4448-a2e7-bebf79590f75
Kokkaliaris, S.
e8e48a61-67b7-4d87-ac4c-a1d6d5c26b3e
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Gordeev, S.N.
2d51d5e7-5fbd-4753-8eb8-a21ff61deb07
Zhukov, A.A.
75d64070-ea67-4984-ae75-4d5798cd3c61
Gagnon, R.
a45ce1df-0d8e-49c8-a86e-faeddd7b426a
Taillefer, L.
f034a4d8-8435-4448-a2e7-bebf79590f75

Kokkaliaris, S., de Groot, P.A.J., Gordeev, S.N., Zhukov, A.A., Gagnon, R. and Taillefer, L. (1999) Onset of plasticity and hardening of the hysteretic response in the vortex system of YBa2Cu3O7- delta. Physical Review Letters, 82 (25), 5116-5119.

Record type: Article

Abstract

A method based on partial magnetization loops has been used to study memory effects in detwinned YBa2Cu3O(7-delta) single crystals. These measurements have revealed the transition from a dislocation-free Bragg glass to a disordered vortex phase. We have mapped this boundary in the B-T phase diagram and have found it to be in proximity to the onset of the second magnetization peak. For fields above the transition line, metastable topological disorder invades the vortex system leading to a pronounced dependence of the critical current on the formation history of the vortex lattice.

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Published date: 1999

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Local EPrints ID: 14742
URI: http://eprints.soton.ac.uk/id/eprint/14742
PURE UUID: f603563e-9820-4cd1-b3aa-3e2695461844

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Date deposited: 04 Mar 2005
Last modified: 09 Dec 2019 19:13

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