Vortex dynamics in two-dimensional systems at high driving forces
Vortex dynamics in two-dimensional systems at high driving forces
We study numerically the dynamics of two-dimensional vortex systems at zero temperature. In addition to pinned states and turbulent plastic flow, we find motion of vortices in rough channels along the direction of the driving force. In this decoupled channel regime we demonstrate how topological defects mediate the phase slip of different channels moving with different velocities. We thus provide important confirmation of recent analytical work describing vortex dynamics at high driving forces such as the moving glass theory of Giamarchi and Le Doussal. For the largest driving forces we find that the channels couple and observe elastic motion.
Fangohr, H.
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Cox, S.J.
0e62aaed-24ad-4a74-b996-f606e40e5c55
de Groot, Peter A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
2001
Fangohr, H.
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Cox, S.J.
0e62aaed-24ad-4a74-b996-f606e40e5c55
de Groot, Peter A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Fangohr, H., Cox, S.J. and de Groot, Peter A.J.
(2001)
Vortex dynamics in two-dimensional systems at high driving forces.
Physical Review B, 64 (6), [064505].
(doi:10.1103/PhysRevB.64.064505).
Abstract
We study numerically the dynamics of two-dimensional vortex systems at zero temperature. In addition to pinned states and turbulent plastic flow, we find motion of vortices in rough channels along the direction of the driving force. In this decoupled channel regime we demonstrate how topological defects mediate the phase slip of different channels moving with different velocities. We thus provide important confirmation of recent analytical work describing vortex dynamics at high driving forces such as the moving glass theory of Giamarchi and Le Doussal. For the largest driving forces we find that the channels couple and observe elastic motion.
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Published date: 2001
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preprint available at http://arXiv.org/abs/cond-mat/0104455 Address: New York
Organisations:
Electronics & Computer Science
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Local EPrints ID: 255755
URI: http://eprints.soton.ac.uk/id/eprint/255755
ISSN: 1550-235X
PURE UUID: 2809d8b5-6440-458b-a538-cf0ded426d4b
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Date deposited: 23 Aug 2001
Last modified: 15 Mar 2024 03:03
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Author:
Peter A.J. de Groot
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