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ID 33874
本文ファイル
著者
Arai, Kuniaki
Kotsugi, Masato
Fukumoto, Keiki
Ohkochi, Takuo
Guo, Fangzhun
Nakamura, Tetsuya
Matsushita, Tomohiro
Muro, Takayuki
Oura, Masaki
Senba, Yasunori
Ohashi, Haruhiko
Kakizaki, Akito
Kinoshita, Toyohiko
NDC
物理学
抄録(英)
The domain structure of antiferromagnetic (AFM) NiO(100) has been investigated by nonmagnetic x-ray linear dichroism (XLD) at the O K edge using photoemission electron microscopy and linearly polarized x-ray light. The evolution of XLD image contrast as the function of the angle between the crystal orientation and the incident s- or p-polarized light is clearly observed. The angular dependence of the XLD contrast is in good agreement with the calculated x-ray absorption cross section of O 1s to 2p orbital that is deformed anisotropically by the strong hybridization with Ni 3d orbitals. This agreement strongly supports the conclusion that the observed XLD contrast reflects the twin-domain (T-domain) structure of the NiO crystal. By comparing the experimental data with the calculation, it is possible to assign each domain contrast to a specific T-domain in the quantitative manner. The proposed simple and clear way of T-domain assignment will be useful for investigating the magnetic domain structures of NiO and other oxide AFM materials such as FeO, CoO, and CuO, and will be important for understanding the magnetic properties of AFM materials, such as the exchange bias effect.
掲載誌名
Physical Review B
85巻
17号
開始ページ
174401-1
終了ページ
174401-6
出版年月日
2012-05-01
出版者
The American Physical Society
ISSN
1098-0121
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
(c) 2012 American Physical Society
関連情報URL
部局名
先端物質科学研究科
放射光科学研究センター