Surface-sensitive Fe 2p photoemission spectra for α-Fe2O3(0001):: The influence of symmetry and crystal-field strength -: art. no. 205414

被引:94
作者
Droubay, T [1 ]
Chambers, SA [1 ]
机构
[1] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA
来源
PHYSICAL REVIEW B | 2001年 / 64卷 / 20期
关键词
D O I
10.1103/PhysRevB.64.205414
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have measured high-energy-resolution Fe 2p photoelectron spectra for alpha -Fe2O3/alpha -Al2O3(0001) grown by oxygen-plasma-assisted molecular-beam epitaxy at emission angles chosen to enhance bulk and surface contributions. We quantitatively reproduce the subtle line-shape differences in these spectra by taking into account the break in symmetry and change in crystal field splitting generated by the presence of the surface.
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页数:6
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