Hard X-ray core level photoemission of vanadium oxides
作者： N. Kamakura , M. Taguchi , K. Yamamoto , K. Horiba , A. Chainani
DOI: 10.1016/J.ELSPEC.2005.01.203
关键词:
摘要: Abstract We have studied vanadium oxides corresponding to formally 3 d 0 ( V 2 O 5 ), 1 VO and ) configurations compare them with mixed valent Na 0.33 , using hard X-ray core level photoemission spectroscopy (PES), which enables probe bulk electronic states due large escape depth of high kinetic energy photoelectrons. The quasi-one-dimensional mixed-valence compound three-dimensional undergo metal–insulator (MI) transition at T MI = 135 160 K, respectively. observed p spectra show a single peak chemical shifts the + 4 while two components are in . Metallic shows character additional low binding levels. also study s these compounds, possible only X-rays confirm systematics valence oxides. temperature dependence across suggests an screening channel available Mott–Hubbard correlated metal phase.
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