Quasi-particle spectrum around a single vortex in s-wave superconductors

Details Quasi-particle spectrum around a single vortex in s-wave superconductors Quasi-particle spectrum around a single vortex in s-wave superconductors

1998-10-15

arxiv.org/abs/cond-mat/9810187v1

Physics

Condensed Matter

Superconductivity

9pages, 23figures

Scientific paper

10.1063/1.59582

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($\hbar=1$). In particular we find that the number of bound states decreases rapidly for decreasing $p_F\xi_0$. Also for $p_F\xi_0\sim 1$, the Kramer-Pesch effect stops around $T/T_c\simeq 0.3$.

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