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

Keywords

  • Electron correlation
  • Hubbard model
  • Superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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