Ginzburg-Landau theory of vortices in a multi-gap superconductor

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dc.creatorZhitomirsky, M. E.
dc.creatorDao, V. -H.
dc.date2003-09-16
dc.date.accessioned2026-07-07T02:53:28Z
dc.date.available2026-07-07T02:53:28Z
dc.descriptionThe Ginzburg-Landau functional for a two-gap superconductor is derived within the weak-coupling BCS model. The two-gap Ginzburg-Landau theory is, then, applied to investigate various magnetic properties of MgB2 including an upturn temperature dependence of the transverse upper critical field and a core structure of an isolated vortex. Orientation of vortex lattice relative to crystallographic axes is studied for magnetic fields parallel to the c-axis. A peculiar 30-degree rotation of the vortex lattice with increasing strength of an applied field observed by neutron scattering is attributed to the multi-gap nature of superconductivity in MgB2.
dc.description11 pages
dc.identifierhttps://arxiv.org/abs/cond-mat/0309372
dc.identifierhttp://arxiv.org/abs/cond-mat/0309372
dc.identifierPhys. Rev. B 69, 054508 (2004)
dc.identifierdoi:10.1103/PhysRevB.69.054508
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22225
dc.subjectSuperconductivity
dc.titleGinzburg-Landau theory of vortices in a multi-gap superconductor
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