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Evidence for unpinned magnetic flux vortices above the Ic transition in the 2223-phase high-Tc superconductor
Luleå tekniska universitet.
1993 (English)In: Journal of Superconductivity, ISSN 0896-1107, E-ISSN 1572-9605, Vol. 6, no 4, p. 255-259Article in journal (Refereed) Published
Abstract [en]

similarity in the dc voltage-current (V I) curves for both direct and alternating transport currents is used to propose that unpinned flux vortices are generated above the Ic transition for dc transport currents, when Abrikosov flux vortices begin to penetrate the superconductor. Two methods can be used to give a dc voltage drop for an ac transport current: (1) if there is a slight dc voltage in the ac current which favors vortex loop collapse as in a traditional dc Ic test, or (2) if an asymmetric transverse magnetic field is present which favors vortex loop collapse for current in one direction over the reverse direction.

Place, publisher, year, edition, pages
1993. Vol. 6, no 4, p. 255-259
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-2897DOI: 10.1007/BF00626266ISI: A1993MC60800007Scopus ID: 2-s2.0-0027646702Local ID: 0a0e1630-f3e4-11db-ac9f-000ea68e967bOAI: oai:DiVA.org:ltu-2897DiVA, id: diva2:975751
Note
Godkänd; 1993; 20070426 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Loberg, Bengt

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