Effect of next-nearest-neighbor transfer on superconductivity and antiferromagnetism in two-dimensional t-J model

Tsutomu Watanabe, Hisatoshi Yokoyama, Yukio Tanaka, Jun Ichiro Inoue, Masao Ogata

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Effect of the diagonal transfer t′ in a square lattice is studied, by applying a variational Monte Carlo method to the t-J model. Condensation energy of d-wave superconductivity increases (decreases) for hole-doped cases, t′/t<0 (electron-doped cases, t′/t>0), whereas antiferromagnetism (AF) is suppressed (enhanced) for t′/t<0 (t′/t>0). Furthermore, the AF state off half filling is intrinsically unstable and phase separates for t′/t≲0, but stable even away from half filling for t′/t∼0.2. This result consistently explains recent experiments on the stability of the AF phases in cuprates.

Original languageEnglish
Pages (from-to)112-114
Number of pages3
JournalJournal of Physics and Chemistry of Solids
Volume67
Issue number1-3
DOIs
Publication statusPublished - 2006 Jan 1

Keywords

  • A. Superconductors
  • D. Electrical properties
  • D. Superconductivity

ASJC Scopus subject areas

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

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