Effect of La doping on the electronic structure of SrTiO3

被引：0
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作者：
Matsushima, Shigenori [1 ]
Kohiki, Shigemi [2 ]
Oku, Masaoki [3 ]
机构：
[1] Department of Chemical Engineering, Kitakyushu Natl. Coll. of Technology, 5-20-1, Shii, Kitakyushu-shi 802-0985, Japan
[2] Department of Materials Science, Faculty of Engineering, Kyushu Institute of Technology, 1-1, Sensui-cho, Tobata-ku, Kitakyushu-shi 804-8550, Japan
[3] Institute for Materials Research, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai-shi 980-8577, Japan
来源：
Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan | 2000年 / 108卷 / 1257期
关键词：
Addition reactions - Band structure - Composition effects - Doping (additives) - Electronic structure - Reaction kinetics - Single crystals - Strontium compounds - X ray photoelectron spectroscopy;
D O I：
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学科分类号：
摘要：
For undoped-SrTiO3 and La-doped SrTiO3 single crystals, X-ray photoemission spectroscopy (XPS) measurements were performed with monochromated Al Kα radiation. Valence band (VB) spectra of as-fractured SrTiO3 exhibit two peaks, P1 and P2, arising from the O 2pπ and O 2pσ bonding orbitals, respectively. Upon adding 3.0 atm% of La to SrTiO3, the valley between P1 and P2 disappears in the VB spectrum. Calculated VB spectra obtained from a molecular orbital calculation reproduce well the experimental XPS spectra for the samples.
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页码：518 / 520
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