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Vortices with fractional flux in two-gap superconductors and in extended Faddeev model | | Egor Babaev
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12 Nov 2001 | | Journal: | Phys.Rev.Lett. 89 (2002) 067001 | | Subject: | Superconductivity | cond-mat.supr-con hep-ph hep-th | | Affiliation: | Uppsala ITP, NORDITA and University of Iceland | | Abstract: | We discuss vortices allowed in two-gap superconductors, bilayer systems and in equivalent extended Faddeev model. We show that in these systems there exist vortices which carry an arbitrary fraction of magnetic flux quantum. Besides that we discuss topological defects which do not carry magnetic flux and describe features of ordinary one-magnetic-flux-quantum vortices in the two-gap system. The results should be relevant for the newly discovered two-band superconductor $Mg B_2$. | | Source: | arXiv, cond-mat/0111192 | | Other source: | [GID 672524] pmid12190602 | | Services: | Forum | Review | PDF | Favorites | |
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