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  1. 050 理学部
  2. 10 学術雑誌論文
  3. 10 査読済論文
  1. 0 資料タイプ別
  2. 01 学術雑誌論文

Antiferromagnetic, Charge and Orbital Order in Na0.5CoO2 Based on the Two Dimensional 11 Bands d-p Model

http://hdl.handle.net/10191/26891
http://hdl.handle.net/10191/26891
571742e8-3646-4ed1-99cc-023e549fb883
名前 / ファイル ライセンス アクション
987.pdf 987.pdf (88.7 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2014-04-16
タイトル
タイトル Antiferromagnetic, Charge and Orbital Order in Na0.5CoO2 Based on the Two Dimensional 11 Bands d-p Model
タイトル
言語 en
タイトル Antiferromagnetic, Charge and Orbital Order in Na0.5CoO2 Based on the Two Dimensional 11 Bands d-p Model
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Yamakawa, Youichi

× Yamakawa, Youichi

WEKO 6827

Yamakawa, Youichi

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Watanabe, Naohiro

× Watanabe, Naohiro

WEKO 6828

Watanabe, Naohiro

Search repository
Ono, Yoshiaki

× Ono, Yoshiaki

WEKO 62

Ono, Yoshiaki

Search repository
抄録
内容記述タイプ Abstract
内容記述 The electronic state of the CoO2 plane in the layered cobalt oxide Na0.5CoO2 is investigated on the basis of the 11 band d-p model on a two dimensional triangular lattice, where the tight-binding parameters are determined so as to fit the LDA band structure and an effective one dimensional potential is added so as to include the effect of the Na order. We treat the Coulomb interaction on a Co site: the intra- and inter-orbital direct terms U and U', the exchange coupling J and the pair-transfer J', within the Hartree-Fock approximation. It is found that the metallic antiferromagnetic order takes place for Tc2 < T < Tc1 and the coexistent state of the antiferromagnetic, orbital and charge orders takes place for T < Tc2 where the system becomes insulator. The obtained results are consistent with the successive phase transitions observed in Na0.5CoO2.
書誌情報 Journal of Physics: Conference Series
en : Journal of Physics: Conference Series

巻 200, 号 1, p. 012233-1-012233-4, 発行日 2010-02
出版者
出版者 IOP Publishing
ISSN
収録物識別子タイプ ISSN
収録物識別子 17426588
書誌レコードID
識別子タイプ NCID
関連識別子 BA87701391
DOI
識別子タイプ DOI
関連識別子 info:doi/10.1088/1742-6596/200/1/012233
著者版フラグ
値 author
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