Attractive Vortex Interaction and the Intermediate-Mixed State of Superconductors
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The magnetic vortices in superconductors usually repel each other. Several cases are discussed when the vortex interaction has an attractive tail, and thus a minimum, leading to vortex clusters and chains. Decoration pictures then typically look like in the intermediate state of type-I superconductors, showing lamellae or islands of Meissner state or surrounded by Meissner state, but with the normal regions filled with Abrikosov vortices that are typical for type-II superconductors in the mixed...[Show more]
dc.contributor.author | Brandt, Ernst | |
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dc.contributor.author | Das, Mukunda P | |
dc.date.accessioned | 2015-12-08T22:17:00Z | |
dc.identifier.issn | 1557-1947 | |
dc.identifier.uri | http://hdl.handle.net/1885/30937 | |
dc.description.abstract | The magnetic vortices in superconductors usually repel each other. Several cases are discussed when the vortex interaction has an attractive tail, and thus a minimum, leading to vortex clusters and chains. Decoration pictures then typically look like in the intermediate state of type-I superconductors, showing lamellae or islands of Meissner state or surrounded by Meissner state, but with the normal regions filled with Abrikosov vortices that are typical for type-II superconductors in the mixed state. Such intermediate-mixed state was observed and investigated in detail in pure Nb, TaN and other materials 40 years ago; last year it was possibly also observed in MgB2, where it was called "a totally new state" and ascribed to the existence of two superconducting electron bands, one of type-I and one of type-II. The complicated electronic structure of MgB2 and its consequences for superconductivity and vortices are discussed. It is shown that for the real superconductor MgB2 which possesses a single transition temperature, the assumption of two independent order parameters with separate penetration depths and separate coherence lengths is unphysical. | |
dc.publisher | Springer | |
dc.source | Journal of Superconductivity and Novel Magnetism | |
dc.subject | Keywords: Abrikosov vortices; Attraction; Coherence lengths; Electron bands; Intermediate state; Intermediate-mixed state; Magnetic vortices; Meissner state; MgB 2 ; Mixed state; Order parameter; Type II superconductors; Vortex interactions; Electronic st Attraction; Intermediate-mixed state; MgB 2; Niobium; Superconductors; Vortex interaction | |
dc.title | Attractive Vortex Interaction and the Intermediate-Mixed State of Superconductors | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 24 | |
dc.date.issued | 2011 | |
local.identifier.absfor | 020404 - Electronic and Magnetic Properties of Condensed Matter; Superconductivity | |
local.identifier.ariespublication | u4726473xPUB78 | |
local.type.status | Published Version | |
local.contributor.affiliation | Brandt, Ernst , Max-Planck-Institut für Metallforschung | |
local.contributor.affiliation | Das, Mukunda P, College of Physical and Mathematical Sciences, ANU | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.issue | 1-2 | |
local.bibliographicCitation.startpage | 57 | |
local.bibliographicCitation.lastpage | 67 | |
local.identifier.doi | 10.1007/s10948-010-1046-8 | |
local.identifier.absseo | 970102 - Expanding Knowledge in the Physical Sciences | |
dc.date.updated | 2016-02-24T11:21:52Z | |
local.identifier.scopusID | 2-s2.0-80052183627 | |
local.identifier.thomsonID | 000289855700009 | |
Collections | ANU Research Publications |
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