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Three and four-body intervortex forces in the Ginzburg-Landau model of single- and multicomponent superconductivity
KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik.
2013 (engelsk)Inngår i: Physica. C, Superconductivity, ISSN 0921-4534, E-ISSN 1873-2143, Vol. 487, s. 19-26Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A systematic numerical study of non-pairwise vortex interaction forces in the Ginzburg-Landau model for single-and multicomponent superconductivity is presented. The interactions are obtained by highly accurate numerical free energy minimization. In particular a three-body interaction is defined as the difference between the total interaction and sum of pairwise interactions in a system of three vortices and such interactions are studied for single and two-component type-1, type-2, and type-1.5 superconductors. In the investigated regimes, the three-body inter action is found to be short-range repulsive but long-range attractive in the type-1 case, zero in the critical kappa (Bogomoln'y) case, attractive in the type-2 case and repulsive in the type-1.5 case. Some systems of four vortices are also studied and results indicate that four-body forces are of substantially less significance than the three-body interactions.

sted, utgiver, år, opplag, sider
2013. Vol. 487, s. 19-26
Emneord [en]
Vortex interactions, Type-1.5 superconductivity, Multicomponent superconductivity
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-122344DOI: 10.1016/j.physc.2013.01.020ISI: 000317743300004Scopus ID: 2-s2.0-84874532266OAI: oai:DiVA.org:kth-122344DiVA, id: diva2:622539
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QC 20130522

Tilgjengelig fra: 2013-05-22 Laget: 2013-05-20 Sist oppdatert: 2024-03-15bibliografisk kontrollert

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Edström, Alexander

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