Local density of states around a magnetic impurity in high-Tc superconductors based on the t-J model

Hiroki Tsuchiura, Yukio Tanaka, Masao Ogata, Satoshi Kashiwaya

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

The local density of states (LDOS) around a magnetic impurity in high-Tc superconductors is studied using the two-dimensional t–J model with a realistic band structure. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. In sharp contrast with the nonmagnetic impurity case, the LDOS near the magnetic impurity shows two resonance peaks reflecting the presence of spin-dependent resonance states. It is also shown that these resonance states are approximately localized around the impurity. The present results have an large implication on the scanning tunneling spectroscopy observation of Bi_(2)Sr_(2)Ca(Cu_(1-x)Ni[Zn]_(x))_(2)O_(8+delta).

Original languageEnglish
Pages (from-to)3165-3168
Number of pages4
JournalPhysical Review Letters
Volume84
Issue number14
DOIs
Publication statusPublished - 2000 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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