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

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

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number140501
Pages (from-to)1405011-1405014
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number14
Publication statusPublished - 2001 Oct 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Local magnetic moments around a nonmagnetic impurity in the two-dimensional t-J model'. Together they form a unique fingerprint.

Cite this