Photoemission Spectroscopy and Electronic Structures of LiMn2O4  

作　　者：吴启辉 THISSEN Andreas JAEGERMANN Wolfram 

机构地区：[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

出　　处：《Chinese Physics Letters》2006年第8期2202-2205,共4页中国物理快报（英文版）

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.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.

关 键 词：RAY PHOTOELECTRON-SPECTROSCOPY PHASE-TRANSITION THIN-FILMS SPINELS LI LI(X)MN2O4 SYSTEMS CELLS 

分 类 号：O43[机械工程—光学工程]