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Nonequilibrium dynamics in type-II superconductors with inhomogeneous vortex pinning

Nonequilibrium dynamics in type-II superconductors with inhomogeneous vortex pinning
Nonequilibrium dynamics in type-II superconductors with inhomogeneous vortex pinning
We study numerically the dynamics relating to negative vortex motion in inhomogeneous pinning systems. We show that this dynamical phenomenon results from the internal field effect produced by the growing local barriers with decreasing temperature. We find that the negative motion is characterized by a peak of negative voltage or resistance in resistance–temperature transport measurements. We also demonstrate that the time window to observe the negative motion is determined by the magnitude of driving force in addition to the temperature scanning rate
langevin dynamics, negative vortex motion, inhomogeneous pinning, relaxation
0921-4534
2008-2011
Xu, X.B.
a2ddcbc4-6195-426f-b0dc-60e6f560fa07
Fangohr, H.
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Xu, X.N.
fe0645d3-cbf8-48dd-bdb8-7b610e35cf95
Gu, M.
9f22a6ef-7e9e-4074-b0de-c1e843705d96
Ding, S.Y.
fd2e0fdd-9f94-4a65-a228-afffd99c000b
Shi, D.Q.
294be8e6-69c8-4cac-9fde-4dae24c47748
Dou, S.X.
896fcf39-9c7c-459e-a50b-11efc49b05a6
Xu, X.B.
a2ddcbc4-6195-426f-b0dc-60e6f560fa07
Fangohr, H.
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Xu, X.N.
fe0645d3-cbf8-48dd-bdb8-7b610e35cf95
Gu, M.
9f22a6ef-7e9e-4074-b0de-c1e843705d96
Ding, S.Y.
fd2e0fdd-9f94-4a65-a228-afffd99c000b
Shi, D.Q.
294be8e6-69c8-4cac-9fde-4dae24c47748
Dou, S.X.
896fcf39-9c7c-459e-a50b-11efc49b05a6

Xu, X.B., Fangohr, H., Xu, X.N., Gu, M., Ding, S.Y., Shi, D.Q. and Dou, S.X. (2009) Nonequilibrium dynamics in type-II superconductors with inhomogeneous vortex pinning. Physica C: Superconductivity And its Applications, 469 (22), 2008-2011. (doi:10.1016/j.physc.2009.09.002).

Record type: Article

Abstract

We study numerically the dynamics relating to negative vortex motion in inhomogeneous pinning systems. We show that this dynamical phenomenon results from the internal field effect produced by the growing local barriers with decreasing temperature. We find that the negative motion is characterized by a peak of negative voltage or resistance in resistance–temperature transport measurements. We also demonstrate that the time window to observe the negative motion is determined by the magnitude of driving force in addition to the temperature scanning rate

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Submitted date: 4 August 2009
Published date: 15 November 2009
Keywords: langevin dynamics, negative vortex motion, inhomogeneous pinning, relaxation

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Local EPrints ID: 71610
URI: https://eprints.soton.ac.uk/id/eprint/71610
ISSN: 0921-4534
PURE UUID: 96c9fefb-a109-40e9-860f-e8407feecda1

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Date deposited: 16 Dec 2009
Last modified: 18 Jul 2017 23:59

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Contributors

Author: X.B. Xu
Author: H. Fangohr
Author: X.N. Xu
Author: M. Gu
Author: S.Y. Ding
Author: D.Q. Shi
Author: S.X. Dou

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