Anomalous temperature dependence of spin susceptibility around a nonmagnetic impurity in high-Tc cuprate superconductors

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Local magnetic properties around a nonmagnetic impurity are investigated in the superconducting state of high-Tc cuprates. We consider a model two-dimensional dx2-y2-wave superconductor with strong antiferromagnetic (AF) spin fluctuations and calculate the spin susceptibility around the impurity. We show that the uniform susceptibility, which is usually suppressed in spin-singlet superconductivity, increases with decreasing temperature around the impurity when the impurity scattering is in the unitarity limit. This anomalous temperature dependence is more remarkable when the impurity potential is extended spatially and the AF spin fluctuations are stronger. Our results agree with the anomalous temperature dependence of the Knight shift on Li that was recently observed in YBa2(Cu1-xLix)3O6+y.

本文言語English
論文番号054522
ページ(範囲)545221-545228
ページ数8
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
66
5
DOI
出版ステータスPublished - 2002 8月 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

フィンガープリント

「Anomalous temperature dependence of spin susceptibility around a nonmagnetic impurity in high-Tc cuprate superconductors」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル