Quasi-Particle Spectrum around a Single Vortex in Superconductors - s-Wave Case -

Details Quasi-Particle Spectrum around a Single Vortex in Superconductors - s-Wave Case - Quasi-Particle Spectrum around a Single Vortex in Superconductors - s-Wave Case -

2000-04-21

arxiv.org/abs/cond-mat/0004370v1

Physics

Condensed Matter

Superconductivity

13 pages, 10 figures, to be published in Progress of Theoretical Physics

Scientific paper

10.1143/PTP.103.867

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 p_F xi_0, where p_F is the Fermi momentum and xi_0=v_F/Delta_0 is the coherence length (hbar=1). During our numerical calculation the particle number is conserved for each p_F xi_0. In particular, we find that there are only 1 or 2 bound states for p_F xi_0=1. Also, for p_F xi_0=1, the Kramer-Pesch effect ceases to exist at around T/T_c= 0.3.

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