Stability of vortex in a two-component superconductor

Abstract

Thermodynamic stability of composite vortex in a two-component superconductor is investigated by the Ginzburg-Landau theory. The predicted nature of these vortices has recently attracted much attention. Here we consider axially symmetric quantized vortex and show that the stability of vortex depends on three independent dimensionless parameters: ${\kappa }_1$, ${\kappa }_2$, ${\kappa }_{\xi }$, where ${\kappa }_i(i=1,2)$ is the Ginzburg-Landau parameter of individual component, ${\kappa }_{\xi }={\xi }_1/{\xi }_2$ is the ratio of two coherence lengths. We also show that there exists thermodynamic stable vortex in type-1+type-2 or type-2+type-2 materials over a range of these three parameters.

7 pages, 2 figures

References in corpus (9)

• A superconductor to superfluid phase transition in liquid metallic hydrogen
• Field- and temperature induced topological phase transitions in the three-dimensional $N$-component London superconductor
• Observability of a projected new state of matter: a metallic superfluid
• Violation of the London Law and Onsager-Feynman quantization in multicomponent superconductors
• Vortex sub-lattice melting in a two-component superconductor
• Type I and Two-Gap Superconductivity in Neutron Star Magnetism
• Unconventional rotational responses of hadronic superfluids in a neutron star caused by strong entrainment and a ${\Sigma }^{-}$ hyperon gap
• Critical properties of the N-color London model
• Observation of a metallic superfluid in a numerical experiment

Cited by in corpus (8)

• Two-band superconductors: Hidden criticality deep in the superconducting state
• Conditions for non-monotonic vortex interaction in two-band superconductors
• Two-band superconductors: Extended Ginzburg-Landau formalism by a systematic expansion in small deviation from the critical temperature
• Type-1.5 superconductivity in multicomponent systems
• Type-1.5 superconductivity in multiband systems: magnetic response, broken symmetries and microscopic theory. A brief overview
• Comment on Phys. Rev. B 83, 054515 (2011) by V. G. Kogan and J. Schmalian and comment on their reply Phys. Rev. B 86, 016502 (2012)
• Type-1.5 superconductivity in muliband and other multicomponent systems
• Magnetic field at the center of a vortex: a new criterion for the classification of the superconductors