Stability of s + id-Wave Pairing State in the 2-D Extended Hubbard Model

Hiroki Tsuchiura, Yukio Tanaka, Yasunari Ushijima

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Coexistence of the s and [formula omitted]-wave (d-wave) pairing is investigated in the two-dimensional (2-D) extended Hubbard model with on-site repulsive and inter-site attractive interactions using the mean-field approximation at T=0K. The next-nearest-neighbor hopping effect can induce the coexistence of the s and d-wave pairing. It is found that in such a case, s + id-wave pairing state becomes most stable.

Original languageEnglish
Pages (from-to)922-926
Number of pages5
Journaljournal of the physical society of japan
Issue number3
Publication statusPublished - 1995 Mar
Externally publishedYes


  • Hartree Fock approximation
  • Hubbard model
  • anisotropic pairing
  • superconductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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