Stability of superconductivity and antiferromagnetism in two-dimensional Hubbard model with diagonal transfer

Hisatoshi Yokoyama, Yukio Tanaka, Masao Ogata

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Using an optimization variational Monte Carlo method, we study the effect of diagonal transfer t′ in a two-dimensional Hubbard model on stability of d-wave superconductivity (SC) and antiferromagnetism (AF). For hole doping (t′/t<0), the condensation energy of SC is enhanced by a couple of times, while that of AF rapidly decreases with increasing |t′/t|, and AF itself is intrinsically unstable for t′/t≲0. For electron doping (t′/t>0), conversely, SC tends to be suppressed, whereas the AF state not only comes to have a low energy but recovers the intrinsic stability. These results well explain various aspects of cuprate superconductors.

Original languageEnglish
Pages (from-to)47-49
Number of pages3
JournalJournal of Physics and Chemistry of Solids
Volume67
Issue number1-3
DOIs
Publication statusPublished - 2006 Jan 1

Keywords

  • D. Superconductivity

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Stability of superconductivity and antiferromagnetism in two-dimensional Hubbard model with diagonal transfer'. Together they form a unique fingerprint.

  • Cite this