Quasi-Particle Spectrum around a Single Vortex in Superconductors s-Wave Case
نویسندگان
چکیده
Making use of the Bogoliubov-de Gennes equation, we study the quasi-particle spectrum and the vortex core structure of a single vortex in quasi 2D s-wave superconductors for small pF ξ0, where pF is the Fermi momentum and ξ0 = vF /∆0 is the coherence length (h̄ = 1). During our numerical calculation the particle number is conserved for each pF ξ0. In particular, we find that there are only 1 or 2 bound states for pF ξ0 = 1. Also, for pF ξ0 = 1, the Kramer-Pesch effect ceases to exist at around T/Tc ≃ 0.3.
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