Off-site repulsion-induced triplet superconductivity: A possibility for chiral px+y-wave pairing in Sr2RuO4

Ryotaro Arita, Seiichiro Onari, Kazuhiko Kuroki, Hideo Aoki

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36 Citations (Scopus)

Abstract

The pairing symmetry in one-band Hubbard model having off-site Coulomb repulsion on top of on-site repulsion as model for γ band of Sr 2RuO4 was discussed. It is observed that singlet pairing dominates over triplet for one-band Hubbard model for the γ band. The dynamic cluster approximations (DCA) and quantum Monte Carlo (QMC) method are also employed to investigate superconductivity in extended Hubbard Hamiltonian which models γ band in ruthenate. The Hubbard model is mapped to a self-consistently embedded cluster of Anderson impurities such that DCA incorporates nonlocal spatial fluctuations.

Original languageEnglish
Pages (from-to)247006-247001
Number of pages6
JournalPhysical Review Letters
Volume92
Issue number24
DOIs
Publication statusPublished - Jun 18 2004
Externally publishedYes

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superconductivity
approximation
Monte Carlo method
impurities
symmetry

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Off-site repulsion-induced triplet superconductivity : A possibility for chiral px+y-wave pairing in Sr2RuO4. / Arita, Ryotaro; Onari, Seiichiro; Kuroki, Kazuhiko; Aoki, Hideo.

In: Physical Review Letters, Vol. 92, No. 24, 18.06.2004, p. 247006-247001.

Research output: Contribution to journalArticle

Arita, Ryotaro ; Onari, Seiichiro ; Kuroki, Kazuhiko ; Aoki, Hideo. / Off-site repulsion-induced triplet superconductivity : A possibility for chiral px+y-wave pairing in Sr2RuO4. In: Physical Review Letters. 2004 ; Vol. 92, No. 24. pp. 247006-247001.
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