Numerical Renormalization Group Study of Magnetic Impurities in Superconductors. II. Dynamical Excitation Spectra and Spatial Variation of the Order Parameter

Osamu Sakai, Yukihiro Shimizu, Hiroyuki Shiba, Koji Satori

Research output: Contribution to journalArticlepeer-review

86 Citations (Scopus)

Abstract

The Kondo problem in superconductors is studied by extending Wilson's numerical renormalization group method. As a continuation to a previous paper (J. Phys. Soc. Jpn. 61 (1992) 3239), various problems related to the localized excited state produced by a magnetic impurity are examined in detail. In particular, the binding energy of the localized excited state, its spectral weight, one-electron and magnetic excitation spectra and the spatial variation of the order parameter are studied over the whole regime of the magnitude of TK/A (TK: Kondo temperature, A: superconducting energy gap).

Original languageEnglish
Pages (from-to)3181-3197
Number of pages17
Journaljournal of the physical society of japan
Volume62
Issue number9
DOIs
Publication statusPublished - 1993

Keywords

  • Kondo effect
  • magnetic impurity
  • numerical renormalization group
  • superconductor

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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