Theoretical analysis on the multi-orbital model for the superconductivity in NaxCoO2

Youichi Yanase*, Masahito Mochizuki, Masao Ogata

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We analyze the multi-orbital model which describes the electronic structure of recently discovered superconductor NaxCoO2·yH2O. The instability to the unconventional superconductivity is investigated by means of the perturbation theory. It is shown that the spin triplet superconductivity is stabilized in the wide parameter region, basically owing to the ferromagnetic spin fluctuation. In a small part of the parameter region, the d-wave superconductivity is also stabilized. We point out that the orbital degree of freedom plays an essential role for the superconductivity.

本文言語English
ページ(範囲)1351-1353
ページ数3
ジャーナルPhysica B: Condensed Matter
359-361
SPEC. ISS.
DOI
出版ステータスPublished - 2005 4月 30
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

フィンガープリント

「Theoretical analysis on the multi-orbital model for the superconductivity in NaxCoO2」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル