X射线吸收光谱法
吸收光谱法
价(化学)
光谱学
电子结构
带隙
电子能带结构
吸收(声学)
材料科学
导带
原子物理学
X射线光谱学
化学
凝聚态物理
光学
光电子学
物理
电子
有机化学
量子力学
复合材料
作者
Tohru Higuchi,Yuki Nagao,J. Liu,Fumitada Iguchi,Noriko Sata,Takeshi Hattori,Hiroo Yugami
摘要
The electronic structure of La1−xSrxScO3 single crystal has been studied by x-ray absorption spectroscopy (XAS). The conduction band is mainly composed of Sc 3d state hybridized with O 2p state. The O 1s XAS spectrum exhibits the existence of the Sc 3d-defect-induced state under the Sc 3d conduction band. The intensity of Sc 3d-defect-induced state increases with Sr substitution. The energy separation between the top of the valence band and the bottom of the Sc 3d-induced unoccupied state is in accordance with the energy gap that is expected from optical absorption.
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