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

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

Research output: Contribution to journalArticle

133 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
Publication statusPublished - 1998

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vortices
excitation
shrinkage
scanning tunneling microscopy
energy levels
asymmetry
oscillations
radii
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Low-lying quasiparticle excitations around a vortex core in quantum limit. / Hayashi, N.; Isoshima, T.; Ichioka, Masanori; Machida, K.

In: Physical Review Letters, Vol. 80, No. 13, 1998, p. 2921-2924.

Research output: Contribution to journalArticle

Hayashi, N, Isoshima, T, Ichioka, M & Machida, K 1998, 'Low-lying quasiparticle excitations around a vortex core in quantum limit', Physical Review Letters, vol. 80, no. 13, pp. 2921-2924.
Hayashi, N. ; Isoshima, T. ; Ichioka, Masanori ; Machida, K. / Low-lying quasiparticle excitations around a vortex core in quantum limit. In: Physical Review Letters. 1998 ; Vol. 80, No. 13. pp. 2921-2924.
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