Low-lying quasiparticle excitations around a vortex core in quantum limit

N. Hayashi, T. Isoshima, M. Ichioka, K. Machida

Research output: Contribution to journalArticle

137 Citations (Scopus)

Abstract

Focusing on a quantum-limit behavior, we study a single vortex in a clean s-wave type-II superconductor by self-consistently solving the Bogoliubov–de Gennes equation. The discrete energy levels of the vortex bound states in the quantum limit are discussed. The vortex core radius shrinks monotonically up to an atomic-scale length on lowering the temperature T, and the shrinkage stops to saturate at a lower T. The pair potential, supercurrent, and local density of states around the vortex exhibit Friedel-like oscillations. The local density of states has particle-hole asymmetry induced by the vortex. These are potentially observed directly by scanning tunneling microscopy.

Original languageEnglish
Pages (from-to)2921-2924
Number of pages4
JournalPhysical Review Letters
Volume80
Issue number13
DOIs
Publication statusPublished - Jan 1 1998

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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