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Depinning of the Bragg glass in a point disordered model superconductor
Umeå University, Faculty of Science and Technology, Department of Physics.ORCID iD: 0000-0003-1774-1828
2007 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 98, no 9, article id 097001Article in journal (Refereed) Published
Abstract [en]

We perform simulations of the three-dimensional frustrated anisotropic XY model with point disorder as a model of a type-II superconductor with quenched point pinning in a magnetic field and a weak applied current. Using resistively shunted junction dynamics, we find a critical current Ic that separates a creep region with immeasurably low voltage from a region with a voltage V∝(I−Ic) and also identify the mechanism behind this behavior. It also turns out that data at fixed disorder strength may be collapsed by plotting V versus TI, where T is the temperature, though the reason for this behavior as yet not is fully understood.

Place, publisher, year, edition, pages
American Physical Society, 2007. Vol. 98, no 9, article id 097001
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:umu:diva-5794DOI: 10.1103/PhysRevLett.98.097001ISI: 000244592100049PubMedID: 17359188Scopus ID: 2-s2.0-35548932583OAI: oai:DiVA.org:umu-5794DiVA, id: diva2:145462
Available from: 2007-11-30 Created: 2007-11-30 Last updated: 2023-10-02Bibliographically approved

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Olsson, Peter

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