Effects of interband impurity scattering on superconducting density of states in a two-band superconductor

研究成果: Article査読

8 被引用数 (Scopus)

抄録

We investigate interband impurity scattering effects on a double gap structure in the superconducting density of states (SDOS) in a two-band superconductor. Using the self-consistent t-matrix theory, we show how the double gap structure gradually disappears/revives when impurity concentration and the magnitude of impurity potential are varied. The increase of impurity concentration leads to an averaged single gap SDOS due to the mixing of two bands by interband scattering. However, this mixing effect is shown to disappear in the strong interband scattering limit. We also show that the intraband impurity scattering suppresses the interband scattering effect because it tends to exclude electrons away from impurity sites.

本文言語English
ページ(範囲)41-45
ページ数5
ジャーナルPhysica C: Superconductivity and its applications
412-414
SPEC. ISS.
DOI
出版ステータスPublished - 2004 10
外部発表はい

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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