Direct evidence of p-type SrTiO3 by high-resolution x-ray absorption spectroscopy -: art. no. 033201

被引：27

作者：

Higuchi, T ^{[1
]}

Tsukamoto, T

Kobayashi, K

Yamaguchi, S

Ishiwata, Y

Sata, N

Hiramoto, K

Ishigame, M

Shin, S

机构：

[1] Tokyo Univ Sci, Dept Appl Phys, Tokyo 1628601, Japan

[2] Nagoya Inst Technol, Dept Mat Sci & Engn, Nagoya, Aichi 4668555, Japan

[3] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

[4] Tohoku Univ, Sci Measurements Res Inst, Sendai, Miyagi 9808577, Japan

[5] RIKEN, Hyogo 6795143, Japan

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.65.033201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study x-ray absorption spectra below the O 1s threshold in Sc-doped stoichiometric strontium titanate (SrTiO3), We find hole states at the top of the valence band and acceptor-induced levels just above the Fermi level. The x-ray absorption spectra features and their temperature dependence are in good agreement with electrical-conductivity studies on the same samples. It is concluded that Sc-doped SrTiO3 is a p-type semiconductor with deep acceptor levels lying in the middle of the band gap.

引用

页码：1 / 4

页数：4

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