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

doi:10.1016/j.jmmm.2006.10.207

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 journal › Article

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 language	English
Pages (from-to)	e289-e291
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 2
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.207
Publication status	Published - Mar 1 2007
Externally published	Yes

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

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

In: Journal of Magnetism and Magnetic Materials, Vol. 310, No. 2 SUPPL. PART 2, 01.03.2007, p. e289-e291.

Research output: Contribution to journal › Article

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, IH & Shin, S 2007, 'Hard X-ray and soft X-ray photoemission study of vanadium oxides', Journal of Magnetism and Magnetic Materials, vol. 310, no. 2 SUPPL. PART 2, pp. e289-e291. https://doi.org/10.1016/j.jmmm.2006.10.207

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. / Hard X-ray and soft X-ray photoemission study of vanadium oxides. In: Journal of Magnetism and Magnetic Materials. 2007 ; Vol. 310, No. 2 SUPPL. PART 2. pp. e289-e291.

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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.",

keywords = "Bulk electronic structure, Photoemission",

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

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T1 - Hard X-ray and soft X-ray photoemission study of vanadium oxides

AU - Eguchi, R.

AU - Takata, Y.

AU - Matsunami, M.

AU - Horiba, K.

AU - Yamamoto, K.

AU - Taguchi, M.

AU - Chainani, A.

AU - Yabashi, M.

AU - Miwa, D.

AU - Nishino, Y.

AU - Tamasaku, K.

AU - Ishikawa, T.

AU - Senba, Y.

AU - Ohashi, H.

AU - Inoue, I. H.

AU - Shin, S.

PY - 2007/3/1

Y1 - 2007/3/1

N2 - 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.

AB - 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.

KW - Bulk electronic structure

KW - Photoemission

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