Enhancement of the extended s-wave pairing in the two-dimensional t-J model

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

Research output: Contribution to journalArticlepeer-review

Abstract

The two-dimensional t-J model, including the next-nearest-neighbor hopping t′ and the three-site hopping J(3), is studied within mean-field theory and Gutzwiller approximation. The effects of two extra terms on the dx2 - y2 and the extended s-wave states are compared. In the case of t′/t < 0 and J(3)/J > 0, the extended s-wave state is remarkably enhanced at a doping rate of δ > 0.5.

Original languageEnglish
Pages (from-to)1867-1869
Number of pages3
JournalJournal of Physics and Chemistry of Solids
Volume59
Issue number10-12
DOIs
Publication statusPublished - 1998 Jan 1
Externally publishedYes

Keywords

  • Mean-field theory
  • s-wave pairing
  • t-J model

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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