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Photoemission Spectroscopy and Electronic Structures of LiMn2O4 |
| WU Qi-Hui1;THISSEN Andreas2;JAEGERMANN Wolfram2 |
| 1Department of Physics and Semiconductor Photonics Research Center, Xiamen University, Xiamen 361005
2Surface Science Institute, Department of Materials Science, Darmstadt University of Technology, Petersenstr. 23, 64287 Darmstadt, Germany |
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| Cite this article: |
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WU Qi-Hui, THISSEN Andreas, JAEGERMANN Wolfram 2006 Chin. Phys. Lett. 23 2202-2205 |
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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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Published: 01 August 2006
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| PACS: |
73.20.-r
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(Electron states at surfaces and interfaces)
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78.70.Em
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68.35.-p
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(Solid surfaces and solid-solid interfaces: structure and energetics)
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