Electron pairing by cooperation of superexchange and polaron effects

Y. Kuramoto, T. Watanabe

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

This paper proposes a pairing mechanism relevant to high Tc superconductors with strong electron correlations. The Hubbard model is extended to account for a large electron-phonon interaction. It is shown that the band width is much reduced by the polaron effect, but that the superexchange interaction is not reduced. The cooperation of superexchange and polaron effects makes an anisotropic singlet pair a stable bound state, with the largest binding energy in the one-dimensional system.

Original languageEnglish
Pages (from-to)821-825
Number of pages5
JournalSolid State Communications
Volume63
Issue number9
DOIs
Publication statusPublished - 1987 Sep

ASJC Scopus subject areas

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

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