Effect of inter-band nesting on superconductivity in stacked honeycomb lattices

Seiichiro Onari, Kazuhiko Kuroki, Ryotaro Arita, Hideo Aoki

Research output: Contribution to journalArticle

Abstract

In order to exemplify our idea that inter-band nesting can favor superconductivity arising electron repulsion in layered, non-Bravais lattices, we have looked into the two-band Hubbard model on a stack of honeycomb lattices with the fluctuation exchange approximation. By systematically varying the band filling and transfers, the inter-band nesting is indeed found to give rise to gap functions that change sign across the bands, with a time-reversal-broken di + id2 intra-band pairing symmetry.

Original languageEnglish
Pages (from-to)1437-1439
Number of pages3
JournalPhysica B: Condensed Matter
Volume329-333
Issue numberII
DOIs
Publication statusPublished - May 2003
Externally publishedYes

Fingerprint

Hubbard model
Superconductivity
superconductivity
Electrons
symmetry
approximation
electrons

Keywords

  • Electron correlation
  • Hubbard model
  • Superconductivity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Effect of inter-band nesting on superconductivity in stacked honeycomb lattices. / Onari, Seiichiro; Kuroki, Kazuhiko; Arita, Ryotaro; Aoki, Hideo.

In: Physica B: Condensed Matter, Vol. 329-333, No. II, 05.2003, p. 1437-1439.

Research output: Contribution to journalArticle

Onari, Seiichiro ; Kuroki, Kazuhiko ; Arita, Ryotaro ; Aoki, Hideo. / Effect of inter-band nesting on superconductivity in stacked honeycomb lattices. In: Physica B: Condensed Matter. 2003 ; Vol. 329-333, No. II. pp. 1437-1439.
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