Local magnetic moments around a nonmagnetic impurity in the two-dimensional t-J model

H. Tsuchiura, Y. Tanaka, M. Ogata, S. Kashiwaya

研究成果: Article査読

47 被引用数 (Scopus)

抄録

Local magnetic moments around a nonmagnetic impurity in the two-dimensional t-J model are studied within Gutzwiller approximations and the Bogoliubov-de Gennes theory. We show that the resonance peak in the local density of states expected around the impurity splits into two when local magnetic moments are induced near the impurity. Therefore, in the recent scanning tunneling spectroscopy data on Bi2Sr2Ca(Cu1-xZnx)2O 8+δ [Pan et al., Nature (London) 403, 746 (2000)] which show the sharp resonance peak, there is no evidence of the existence of local moments around the Zn impurities. It is shown that the absence of local moments is caused by the tendency of electrons to avoid the impurity.

本文言語English
論文番号140501
ページ(範囲)1405011-1405014
ページ数4
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
64
14
出版ステータスPublished - 2001 10 1
外部発表はい

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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