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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

Effect of ferromagnetic spin fluctuations on the electronic states in NaxCoO2 based on two-dimensional triangular lattice 11-band d-p model

http://hdl.handle.net/10191/26879
http://hdl.handle.net/10191/26879
abba4a32-1fa8-403d-b3e4-fb8ab638391f
名前 / ファイル ライセンス アクション
995.pdf 995.pdf (217.1 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 Effect of ferromagnetic spin fluctuations on the electronic states in NaxCoO2 based on two-dimensional triangular lattice 11-band d-p model
タイトル
言語 en
タイトル Effect of ferromagnetic spin fluctuations on the electronic states in NaxCoO2 based on two-dimensional triangular lattice 11-band d-p model
言語
言語 eng
キーワード
主題Scheme Other
主題 NaxCoO2
キーワード
主題Scheme Other
主題 ferromagnetic spin fluctuations
キーワード
主題Scheme Other
主題 RPA
キーワード
主題Scheme Other
主題 electronic specific heat
キーワード
主題Scheme Other
主題 renormalized band
キーワード
主題Scheme Other
主題 mass enhancement
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Yanagi, Yuki

× Yanagi, Yuki

WEKO 6807

Yanagi, Yuki

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 Electronic states of the CoO2 plane in NaxCoO2 are investigated on the basis of the triangular lattice 11-band d-p model by using the second order perturbation (SOP) and the random phase approximation (RPA). Due to the effect of the in-plane ferromagnetic fluctuations enhanced for 0:6 < x < 0.75, the quasiparticle dispersion near the Γ-point is strongly reduced to yield an almost flat dispersion just above the fermi level. With increasing x, the electronic specifc heat coefficient γincreases towards the critical doping xc ~ 0.75 above which the in-plane ferromagnetism takes place. We also find that the six small hole pockets near the K-point are stabilized due to the electron correlation effect within both the SOP and the RPA.
書誌情報 Journal of Physics and Chemistry of Solids
en : Journal of Physics and Chemistry of Solids

巻 69, 号 12, p. 3317-3320, 発行日 2008-12
出版者
出版者 Elsevier
ISSN
収録物識別子タイプ ISSN
収録物識別子 00223697
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA00704949
DOI
識別子タイプ DOI
関連識別子 info:doi/10.1016/j.jpcs.2008.06.078
著者版フラグ
値 author
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