Electronic structure of 3 d1 configuration vanadium oxides studied by soft X-ray and hard X-ray photoemission spectroscopy

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

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We investigate the electronic structure of 3 d1 configuration vanadium oxides (VO2, SrVO3 and CaVO3) using soft X-ray (SX) and hard X-ray (HX) photoemission spectroscopy (PES). The valence band spectra of VO2 in SX- and HX-PES clearly show the opening of a gap at EF across the metal-insulator transition. Spectral changes in the V 2p and O 1s core levels were also observed. In addition, 3 d1 configuration correlated metals SrVO3 and CaVO3 are typical materials whose valence band spectra are compared with dynamical mean-field theory. The V 2p and V 1s core level HX-PES of SrVO3 and CaVO3 show clear additional well-screened features. These features originate from bulk screening by a coherent band at EF. These spectra are nicely reproduced by a cluster model calculation, indicating a difference of the parameter V* for the interaction strength between the central V 3d orbitals and the coherent band.

Original languageEnglish
Pages (from-to)421-425
Number of pages5
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume156-158
DOIs
Publication statusPublished - May 2007
Externally publishedYes

Fingerprint

Vanadium
vanadium oxides
Photoelectron spectroscopy
X ray spectroscopy
Oxides
Electronic structure
photoelectric emission
Core levels
electronic structure
Valence bands
X rays
configurations
spectroscopy
Mean field theory
Metal insulator transition
x rays
Screening
valence
Metals
metals

Keywords

  • Bulk electronic structure
  • Photoemission
  • Vanadium oxides

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

Cite this

Electronic structure of 3 d1 configuration vanadium oxides studied by soft X-ray and hard X-ray photoemission spectroscopy. / Eguchi, Ritsuko; Taguchi, M.; Matsunami, M.; Horiba, K.; Yamamoto, K.; Chainani, A.; Takata, Y.; Yabashi, M.; Miwa, D.; Nishino, Y.; Tamasaku, K.; Ishikawa, T.; Senba, Y.; Ohashi, H.; Inoue, I. H.; Muraoka, Yuji; Hiroi, Z.; Shin, S.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 156-158, 05.2007, p. 421-425.

Research output: Contribution to journalArticle

Eguchi, R, Taguchi, M, Matsunami, M, Horiba, K, Yamamoto, K, Chainani, A, Takata, Y, Yabashi, M, Miwa, D, Nishino, Y, Tamasaku, K, Ishikawa, T, Senba, Y, Ohashi, H, Inoue, IH, Muraoka, Y, Hiroi, Z & Shin, S 2007, 'Electronic structure of 3 d1 configuration vanadium oxides studied by soft X-ray and hard X-ray photoemission spectroscopy', Journal of Electron Spectroscopy and Related Phenomena, vol. 156-158, pp. 421-425. https://doi.org/10.1016/j.elspec.2006.12.055
Eguchi, Ritsuko ; Taguchi, M. ; Matsunami, M. ; Horiba, K. ; Yamamoto, K. ; Chainani, A. ; Takata, Y. ; Yabashi, M. ; Miwa, D. ; Nishino, Y. ; Tamasaku, K. ; Ishikawa, T. ; Senba, Y. ; Ohashi, H. ; Inoue, I. H. ; Muraoka, Yuji ; Hiroi, Z. ; Shin, S. / Electronic structure of 3 d1 configuration vanadium oxides studied by soft X-ray and hard X-ray photoemission spectroscopy. In: Journal of Electron Spectroscopy and Related Phenomena. 2007 ; Vol. 156-158. pp. 421-425.
@article{4f0e1c318a4d4423b63886722e8120fe,
title = "Electronic structure of 3 d1 configuration vanadium oxides studied by soft X-ray and hard X-ray photoemission spectroscopy",
abstract = "We investigate the electronic structure of 3 d1 configuration vanadium oxides (VO2, SrVO3 and CaVO3) using soft X-ray (SX) and hard X-ray (HX) photoemission spectroscopy (PES). The valence band spectra of VO2 in SX- and HX-PES clearly show the opening of a gap at EF across the metal-insulator transition. Spectral changes in the V 2p and O 1s core levels were also observed. In addition, 3 d1 configuration correlated metals SrVO3 and CaVO3 are typical materials whose valence band spectra are compared with dynamical mean-field theory. The V 2p and V 1s core level HX-PES of SrVO3 and CaVO3 show clear additional well-screened features. These features originate from bulk screening by a coherent band at EF. These spectra are nicely reproduced by a cluster model calculation, indicating a difference of the parameter V* for the interaction strength between the central V 3d orbitals and the coherent band.",
keywords = "Bulk electronic structure, Photoemission, Vanadium oxides",
author = "Ritsuko Eguchi and M. Taguchi and M. Matsunami and K. Horiba and K. Yamamoto and A. Chainani and Y. Takata 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 Yuji Muraoka and Z. Hiroi and S. Shin",
year = "2007",
month = "5",
doi = "10.1016/j.elspec.2006.12.055",
language = "English",
volume = "156-158",
pages = "421--425",
journal = "Journal of Electron Spectroscopy and Related Phenomena",
issn = "0368-2048",
publisher = "Elsevier",

}

TY - JOUR

T1 - Electronic structure of 3 d1 configuration vanadium oxides studied by soft X-ray and hard X-ray photoemission spectroscopy

AU - Eguchi, Ritsuko

AU - Taguchi, M.

AU - Matsunami, M.

AU - Horiba, K.

AU - Yamamoto, K.

AU - Chainani, A.

AU - Takata, Y.

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 - Muraoka, Yuji

AU - Hiroi, Z.

AU - Shin, S.

PY - 2007/5

Y1 - 2007/5

N2 - We investigate the electronic structure of 3 d1 configuration vanadium oxides (VO2, SrVO3 and CaVO3) using soft X-ray (SX) and hard X-ray (HX) photoemission spectroscopy (PES). The valence band spectra of VO2 in SX- and HX-PES clearly show the opening of a gap at EF across the metal-insulator transition. Spectral changes in the V 2p and O 1s core levels were also observed. In addition, 3 d1 configuration correlated metals SrVO3 and CaVO3 are typical materials whose valence band spectra are compared with dynamical mean-field theory. The V 2p and V 1s core level HX-PES of SrVO3 and CaVO3 show clear additional well-screened features. These features originate from bulk screening by a coherent band at EF. These spectra are nicely reproduced by a cluster model calculation, indicating a difference of the parameter V* for the interaction strength between the central V 3d orbitals and the coherent band.

AB - We investigate the electronic structure of 3 d1 configuration vanadium oxides (VO2, SrVO3 and CaVO3) using soft X-ray (SX) and hard X-ray (HX) photoemission spectroscopy (PES). The valence band spectra of VO2 in SX- and HX-PES clearly show the opening of a gap at EF across the metal-insulator transition. Spectral changes in the V 2p and O 1s core levels were also observed. In addition, 3 d1 configuration correlated metals SrVO3 and CaVO3 are typical materials whose valence band spectra are compared with dynamical mean-field theory. The V 2p and V 1s core level HX-PES of SrVO3 and CaVO3 show clear additional well-screened features. These features originate from bulk screening by a coherent band at EF. These spectra are nicely reproduced by a cluster model calculation, indicating a difference of the parameter V* for the interaction strength between the central V 3d orbitals and the coherent band.

KW - Bulk electronic structure

KW - Photoemission

KW - Vanadium oxides

UR - http://www.scopus.com/inward/record.url?scp=34247174290&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34247174290&partnerID=8YFLogxK

U2 - 10.1016/j.elspec.2006.12.055

DO - 10.1016/j.elspec.2006.12.055

M3 - Article

AN - SCOPUS:34247174290

VL - 156-158

SP - 421

EP - 425

JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

SN - 0368-2048

ER -