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

Masaru Kato·Kazumi Maki
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Abstract

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 $p_Fξ_0$, where $p_F$ is the Fermi momentum and $ξ_0=v_F/Δ_0$ is the coherence length($\hbar=1$). In particular we find that the number of bound states decreases rapidly for decreasing $p_Fξ_0$. Also for $p_Fξ_0\sim 1$, the Kramer-Pesch effect stops around $T/T_c\simeq 0.3$.

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Masaru Kato, Kazumi Maki. 1998-10-15. Quasi-particle spectrum around a single vortex in s-wave superconductors. https://doi.org/10.1063/1.59582

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