| Photoemission Spectroscopy and Electronic Structures of LiMn2O4 |
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| 作者姓名： | 吴启辉 THISSEN Andreas JAEGERMANN Wolfram |
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| 作者单位： | [1]Department of Physics and Semiconductor Photonics Research Center, Xiamen University, Xiamen 361005 [2]Surface Science Institute, Department of Materials Science, Darmstadt University of Technology, Petersenstr. 23,64287 Darmstadt, Germany |
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| 摘 要： | We study the electronic structures of LiMn2O4 by x-ray and ultraviolet photoelectron spectroscopy （XPS, UPS） and resonant photoelectron spectroscopy （RPES）. XPS data suggest that the average oxidation state of Mn ions is 3.55, probably due to the small amount of lithium oxides on the surface. UPS and RPES data imply that Mn ions are in a high spin state, and RPES results show strong Mn3d-O2p hybridization in the LiMn2O4 valence band.
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| 关 键 词： | 光电效应光谱学 电子结构 X射线 RPES |
| 收稿时间： | 2006-02-08 |
| 修稿时间： | 2006-02-08 |
Photoemission Spectroscopy and Electronic Structures of LiMn2O4 |
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| WU Qi-Hui,THISSEN Andreas,JAEGERMANN Wolfram.Photoemission Spectroscopy and Electronic Structures of LiMn2O4[J].Chinese Physics Letters,2006,23(8):2202-2205. |
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| Authors: | WU Qi-Hui THISSEN Andreas JAEGERMANN Wolfram |
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| Institution: | 1.Department of Physics and Semiconductor Photonics Research Center, Xiamen University, Xiamen 361005; 2.Surface Science Institute, Department of Materials Science, Darmstadt University of Technology, Petersenstr. 23,64287 Darmstadt, Germany |
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| Abstract: | We study the electronic structures of LiMn2O4 by x-ray and ultraviolet photoelectron spectroscopy (XPS, UPS) and resonant photoelectron spectroscopy (RPES). XPS data suggest that the average oxidation state of Mn ions is 3.55, probably due to the small amount of lithium oxides on the surface. UPS and RPES data imply that Mn ions are in a high spin state, and RPES results show strong Mn3d--O2p hybridization in the LiMn2O4 valence band. |
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| Keywords: | 73 20 -r 78 70 Em 68 35 -p |
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