Giant vortices, vortex rings and reentrant behavior in type-1.5 superconductors

Abstract

We predict that in a bulk type-1.5 superconductor the competing magnetic responses of the two components of the order parameter can result in a vortex interaction that generates group-stabilized giant vortices and unusual vortex rings in the absence of any extrinsic pinning or confinement mechanism. We also find within the Ginzburg-Landau theory a rich phase diagram with successions of behaviors like type-1 -> type-1.5 -> type-2 -> type-1.5 as temperature decreases.

5 pages, 4 figures

References in corpus (7)

• Very High Field Two-Band Superconductivity in LaFeAsO_0.89F_0.11
• Type-1.5 Superconductors
• Ginzburg-Landau theory of vortices in a multi-gap superconductor
• Limits of the upper critical field in dirty two-gap superconductors
• Thermodynamically stable noncomposite vortices in mesoscopic two-gap superconductors
• Type I and Two-Gap Superconductivity in Neutron Star Magnetism
• Defect formation in the early universe

Cited by in corpus (11)

• Two-band superconductors: Hidden criticality deep in the superconducting state
• Ginzburg-Landau theory for multiband superconductors: microscopic derivation
• Conditions for non-monotonic vortex interaction in two-band superconductors
• Stability of fractional vortex states in a two-band mesoscopic superconductor
• Muon-spin rotation measurements of the vortex state in Sr${}_2$RuO${}_4$: type-1.5 superconductivity, vortex clustering and a crossover from a triangular to a square vortex lattice
• Ground state, collective mode, phase soliton and vortex in multiband superconductors
• Type-1.5 superconductivity in multicomponent systems
• Vortex chains due to nonpairwise interactions and field-induced phase transitions between states with different broken symmetry in superconductors with competing order parameters
• Type-1.5 superconductivity in muliband and other multicomponent systems
• Identification of multiple-flux-quanta vortices by core states in the two-band superconductor Pb
• Three and Four-Body Intervortex Forces in the Ginzburg-Landau Models of Single- and Multicomponent Superconductivity