論文

査読有り
2017年12月1日

Charge-density study on layered oxyarsenides (Lao)MAs (M = Mn, Fe, Ni, Zn)

Applied Physics Express
  • Kouichi Takase
  • ,
  • Shozo Hiramoto
  • ,
  • Tetsuya Fukushima
  • ,
  • Kazunori Sato
  • ,
  • Chikako Moriyoshi
  • ,
  • Yoshihiro Kuroiwa

10
12
開始ページ
123001
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.7567/APEX.10.123001
出版者・発行元
Japan Society of Applied Physics

Using synchrotron X-ray powder diffraction, we investigate the charge-density distributions of the layered oxypnictides (LaO)MnAs, (LaO)FeAs, (LaO)NiAs, and (LaO)ZnAs, which are an antiferromagnetic semiconductor, a parent material of an iron-based superconductor, a low-temperature superconductor, and a non-magnetic semiconductor, respectively. For the metallic samples, clear charge densities are observed in both the transition-metal pnictide layers and the rare-earth-oxide layers. However, in the semiconducting samples, there is no finite charge density between the transition-metal element and As. These differences in charge density reflect differences in physical properties. First-principles calculations using density functional theory reproduce the experimental results reasonably well.

リンク情報
DOI
https://doi.org/10.7567/APEX.10.123001
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85039986944&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85039986944&origin=inward
ID情報
  • DOI : 10.7567/APEX.10.123001
  • ISSN : 1882-0786
  • ISSN : 1882-0778
  • eISSN : 1882-0786
  • SCOPUS ID : 85039986944

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