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  Velocity fluctuations of vortices in driven two-dimensional vortex matter

Jang, D. (2018). Velocity fluctuations of vortices in driven two-dimensional vortex matter. Journal of physics communications, 2(12): 125015, pp. 1-8. doi:10.1088/2399-6528/aaf09d.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-63C3-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-63C7-D
Genre: Journal Article

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 Creators:
Jang, Dongjin1, Author              
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              

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 Abstract: A molecular dynamic simulation is conducted for a dense two-dimensional vortex matter. At the critical moment when depinning events were concentrated and dynamic phase transition occurred, the simulation shows unexpectedly slow fluctuation in collective velocity of vortices along the direction of driving force (longitudinal direction). A detailed analysis exhibited heavy braiding of vortex flow-channels, and it was revealed that the velocity fluctuation is well synchronized with fluctuation of local density of flow-channels upon the depinning transition. In addition, vortex transport properties of a superconducting MgCNi3 single crystal seemed to show consistency between the experiment and the theory. At last, the density of flow-channels is proposed as a dynamic order parameter of current-driven vortex phase.

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Language(s): eng - English
 Dates: 2018-12-192018-12-19
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: ISI: 000462247400015
DOI: 10.1088/2399-6528/aaf09d
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Title: Journal of physics communications
Source Genre: Journal
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Publ. Info: Bristol, UK : IOP Publishing
Pages: - Volume / Issue: 2 (12) Sequence Number: 125015 Start / End Page: 1 - 8 Identifier: ISSN: 2399-6528
CoNE: https://pure.mpg.de/cone/journals/resource/2399-6528