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ID 19351
本文ファイル
著者
Yamakawa, K.
Saitoh, Tomohiko
Inaba, Jungo
Katsufuji, Takuro
Higashiguchi, Mitsuharu
キーワード
strontium compounds
lanthanum compounds
band structure
photoelectron spectra
carrier density
localised states
charge transfer states
抄録(英)
We present the electronic structure of Sr1-(x+y)Lax+yTi1-xCrxO3 investigated by high-resolution photoemission spectroscopy. In the vicinity of the Fermi level, it was found that the electronic structure was composed of a Cr 3d local state with the t2g3 configuration and a Ti 3d itinerant state. The energy levels of these Cr and Ti 3d states are well interpreted by the difference of the charge-transfer energy of both ions. The spectral weight of the Cr 3d state is completely proportional to the spin concentration x irrespective of the carrier concentration y, indicating that the spin density can be controlled by x as desired. In contrast, the spectral weight of the Ti 3d state is not proportional to y, depending on the amount of Cr doping.
掲載誌名
Physical Review Letters
96巻
6号
開始ページ
067203-1
終了ページ
067203-4
出版年月日
2006-02-14
出版者
American Physical Society
ISSN
0031-9007
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
Copyright (c) 2006 The American Physical Society.
関連情報URL
部局名
理学研究科
放射光科学研究センター