Interplay between magnetic impurities and photoinduced carriers in surface depletion layer of anatase Ti1-x Cox O2-δ thin film probed by x-ray photoemission spectroscopy

N. Yamashita*, T. Sudayama, T. Mizokawa, Y. Yamada, T. Fukumura, M. Kawasaki

*この研究の対応する著者

研究成果: Article査読

7 被引用数 (Scopus)

抄録

X-ray photoemission spectroscopy measurements with ultraviolet laser illumination have been performed for anatase Ti1-x Cox O2-δ thin films with x=0.05 and 0.10 in order to investigate the interplay between the Co spins and the photoinduced carriers in the surface region. We have found that the surface band bending is removed by the ultraviolet illumination, indicating that photoinduced carriers are injected into the surface depletion layer. After the carrier injection, the position of the chemical potential is governed by the exchange splitting of the Ti 3d conduction band due to the magnetic interaction between the photoinduced carriers and the Co spins.

本文言語English
論文番号021907
ジャーナルApplied Physics Letters
96
2
DOI
出版ステータスPublished - 2010
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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