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Depinning of the Bragg glass in a point disordered model superconductor
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik.ORCID-id: 0000-0003-1774-1828
2007 (engelsk)Inngår i: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 98, nr 9, artikkel-id 097001Artikkel i tidsskrift (Fagfellevurdert) 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.

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American Physical Society, 2007. Vol. 98, nr 9, artikkel-id 097001
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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
Tilgjengelig fra: 2007-11-30 Laget: 2007-11-30 Sist oppdatert: 2023-10-02bibliografisk kontrollert

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