Spin-triplet superconductivity induced by off-site Coulomb interaction in a triangular lattice

Hiroshi Kimura, Seiichiro Onari, Yukio Tanaka

Research output: Contribution to journalArticle

Abstract

In order to study how superconductivity emerges when the charge fluctuation coexists with the spin fluctuation in a triangular lattice, we obtain a phase diagram against the nearest-neighbor Coulomb repulsion V and band filling n on the extended Hubbard model using the fluctuation exchange (FLEX) approximation. We find that a charge density wave (CDW) phase exists in the region where the value of V is large, and the f-wave spin-triplet pairing mediated by a strong charge fluctuation is dominant near the CDW phase.

Original languageEnglish
Pages (from-to)3310-3312
Number of pages3
JournalJournal of Physics and Chemistry of Solids
Volume69
Issue number12
DOIs
Publication statusPublished - Dec 2008
Externally publishedYes

Fingerprint

Charge density waves
Coulomb interactions
Superconductivity
superconductivity
Spin fluctuations
Hubbard model
Spin waves
Phase diagrams
interactions
magnons
phase diagrams
approximation

Keywords

  • A. Organic compounds
  • D. Charge-density waves
  • D. Spin-density waves
  • D. Superconductivity

ASJC Scopus subject areas

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

Cite this

Spin-triplet superconductivity induced by off-site Coulomb interaction in a triangular lattice. / Kimura, Hiroshi; Onari, Seiichiro; Tanaka, Yukio.

In: Journal of Physics and Chemistry of Solids, Vol. 69, No. 12, 12.2008, p. 3310-3312.

Research output: Contribution to journalArticle

Kimura, Hiroshi ; Onari, Seiichiro ; Tanaka, Yukio. / Spin-triplet superconductivity induced by off-site Coulomb interaction in a triangular lattice. In: Journal of Physics and Chemistry of Solids. 2008 ; Vol. 69, No. 12. pp. 3310-3312.
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