Hard X-ray and soft X-ray photoemission study of vanadium oxides

R. Eguchi, Y. Takata, M. Matsunami, K. Horiba, K. Yamamoto, M. Taguchi, A. Chainani, M. Yabashi, D. Miwa, Y. Nishino, K. Tamasaku, T. Ishikawa, Y. Senba, H. Ohashi, I. H. Inoue, S. Shin

Research output: Contribution to journalArticle

Abstract

We study the electronic structure of Mott-Hubbard systems SrVO3 and CaVO3 with photoemission spectroscopy (PES) using hard X-rays (HX) (h ν∼ 8 keV) and soft X-rays (SX) (h ν∼ 900 eV). In HX-PES results, the V 2p core levels of SrVO3 and CaVO3 show clear additional intensity, which are not observed in SX-PES. These features originate from bulk screening by coherent states at Fermi level as observed in other 3d transition metal oxides. From the comparison between SrVO3 and CaVO3 in HX-PES, the intensity in SrVO3 is nearly similar to CaVO3. The results suggest screening from coherent states is more efficient in HX-PES compared to SX-PES.

Original languageEnglish
Pages (from-to)e289-e291
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 2
DOIs
Publication statusPublished - Mar 1 2007
Externally publishedYes

Keywords

  • Bulk electronic structure
  • Photoemission

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Eguchi, R., Takata, Y., Matsunami, M., Horiba, K., Yamamoto, K., Taguchi, M., Chainani, A., Yabashi, M., Miwa, D., Nishino, Y., Tamasaku, K., Ishikawa, T., Senba, Y., Ohashi, H., Inoue, I. H., & Shin, S. (2007). Hard X-ray and soft X-ray photoemission study of vanadium oxides. Journal of Magnetism and Magnetic Materials, 310(2 SUPPL. PART 2), e289-e291. https://doi.org/10.1016/j.jmmm.2006.10.207