Site-specific valence-band X-ray photoelectron spectra of a SrTiO 3 single-crystal by X-ray standing wave technique

Tatsuo Fujii; Masahiro Kimura; Hideki Yoshikawa; Sei Fukushima

doi:10.1016/j.ssc.2005.09.013

Site-specific valence-band X-ray photoelectron spectra of a SrTiO ₃ single-crystal by X-ray standing wave technique

Tatsuo Fujii, Masahiro Kimura, Hideki Yoshikawa, Sei Fukushima

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Site-specific valence-band X-ray photoelectron spectra of SrTiO₃ (111) were successfully obtained by using X-ray standing wave technique. Contributions of the Ti and SrO₃ derived states to the valence-band spectra were clearly separated. The spectra provided not only site-specific but also bulk-sensitive information on the SrTiO₃ crystal because of the use of a high-energy synchrotron X-ray source (hν=4750 eV) for photoelectron excitation with the large escape depth. The electronic structures calculated by the DV-Xα method using a (Sr₈Ti₂₇O ₁₀₈)^92- cluster model well reproduced the observed structures in the valence-band spectra. The partial density of states of both Ti and Sr ions in SrTiO₃ were mainly distributed over the bottom of the valence-band to produce the covalent bonding with O ions.

Original language	English
Pages (from-to)	375-379
Number of pages	5
Journal	Solid State Communications
Volume	136
Issue number	7
DOIs	https://doi.org/10.1016/j.ssc.2005.09.013
Publication status	Published - Nov 1 2005

Keywords

A. Ferroelectrics
D. Electronic states (localized)
E. Photoelectron spectroscopies

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/j.ssc.2005.09.013

Cite this

@article{4039592dc2f344fcb7a4b1f01e010416,

title = "Site-specific valence-band X-ray photoelectron spectra of a SrTiO 3 single-crystal by X-ray standing wave technique",

abstract = "Site-specific valence-band X-ray photoelectron spectra of SrTiO3 (111) were successfully obtained by using X-ray standing wave technique. Contributions of the Ti and SrO3 derived states to the valence-band spectra were clearly separated. The spectra provided not only site-specific but also bulk-sensitive information on the SrTiO3 crystal because of the use of a high-energy synchrotron X-ray source (hν=4750 eV) for photoelectron excitation with the large escape depth. The electronic structures calculated by the DV-Xα method using a (Sr8Ti27O 108)92- cluster model well reproduced the observed structures in the valence-band spectra. The partial density of states of both Ti and Sr ions in SrTiO3 were mainly distributed over the bottom of the valence-band to produce the covalent bonding with O ions.",

keywords = "A. Ferroelectrics, D. Electronic states (localized), E. Photoelectron spectroscopies",

author = "Tatsuo Fujii and Masahiro Kimura and Hideki Yoshikawa and Sei Fukushima",

year = "2005",

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doi = "10.1016/j.ssc.2005.09.013",

language = "English",

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journal = "Solid State Communications",

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T1 - Site-specific valence-band X-ray photoelectron spectra of a SrTiO 3 single-crystal by X-ray standing wave technique

AU - Fujii, Tatsuo

AU - Kimura, Masahiro

AU - Yoshikawa, Hideki

AU - Fukushima, Sei

PY - 2005/11/1

Y1 - 2005/11/1

N2 - Site-specific valence-band X-ray photoelectron spectra of SrTiO3 (111) were successfully obtained by using X-ray standing wave technique. Contributions of the Ti and SrO3 derived states to the valence-band spectra were clearly separated. The spectra provided not only site-specific but also bulk-sensitive information on the SrTiO3 crystal because of the use of a high-energy synchrotron X-ray source (hν=4750 eV) for photoelectron excitation with the large escape depth. The electronic structures calculated by the DV-Xα method using a (Sr8Ti27O 108)92- cluster model well reproduced the observed structures in the valence-band spectra. The partial density of states of both Ti and Sr ions in SrTiO3 were mainly distributed over the bottom of the valence-band to produce the covalent bonding with O ions.

AB - Site-specific valence-band X-ray photoelectron spectra of SrTiO3 (111) were successfully obtained by using X-ray standing wave technique. Contributions of the Ti and SrO3 derived states to the valence-band spectra were clearly separated. The spectra provided not only site-specific but also bulk-sensitive information on the SrTiO3 crystal because of the use of a high-energy synchrotron X-ray source (hν=4750 eV) for photoelectron excitation with the large escape depth. The electronic structures calculated by the DV-Xα method using a (Sr8Ti27O 108)92- cluster model well reproduced the observed structures in the valence-band spectra. The partial density of states of both Ti and Sr ions in SrTiO3 were mainly distributed over the bottom of the valence-band to produce the covalent bonding with O ions.

KW - A. Ferroelectrics

KW - D. Electronic states (localized)

KW - E. Photoelectron spectroscopies

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