Sr surface segregation and water cleaning for atomically controlled SrTiO3 (0 0 1) substrates studied by photoemission spectroscopy

D. Kobayashi; R. Hashimoto; A. Chikamatsu; H. Kumigashira; M. Oshima; T. Ohnishi; M. Lippmaa; K. Ono; M. Kawasaki; H. Koinuma

doi:10.1016/j.elspec.2005.01.167

Sr surface segregation and water cleaning for atomically controlled SrTiO₃ (0 0 1) substrates studied by photoemission spectroscopy

D. Kobayashi, R. Hashimoto, A. Chikamatsu, H. Kumigashira, M. Oshima, T. Ohnishi, M. Lippmaa, K. Ono, M. Kawasaki, H. Koinuma

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

10 Citations (Scopus)

Abstract

The chemical properties and electronic structures of atomically flat SrTiO₃ (0 0 1) substrates with various surface treatments have been investigated by high-resolution synchrotron-radiation photoemission spectroscopy. We have found that an annealing process causes the segregation of Sr oxides at the TiO₂-terminated surface. We demonstrate that the use of water-cleaning process is effective as a removal technique for Sr oxides segregated on TiO₂-terminated surfaces with preserving the surface morphology and chemical bonding states of the topmost TiO₂-terminated surfaces.

Original language	English
Pages (from-to)	443-446
Number of pages	4
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	144-147
DOIs	https://doi.org/10.1016/j.elspec.2005.01.167
Publication status	Published - 2005 Jun
Externally published	Yes

Keywords

Photoemission spectroscopy
SrTiO substrates
TiO -terminated surface

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

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Kobayashi, D., Hashimoto, R., Chikamatsu, A., Kumigashira, H., Oshima, M., Ohnishi, T., Lippmaa, M., Ono, K., Kawasaki, M., & Koinuma, H. (2005). Sr surface segregation and water cleaning for atomically controlled SrTiO₃ (0 0 1) substrates studied by photoemission spectroscopy. Journal of Electron Spectroscopy and Related Phenomena, 144-147, 443-446. https://doi.org/10.1016/j.elspec.2005.01.167

Sr surface segregation and water cleaning for atomically controlled SrTiO₃ (0 0 1) substrates studied by photoemission spectroscopy. / Kobayashi, D.; Hashimoto, R.; Chikamatsu, A.; Kumigashira, H.; Oshima, M.; Ohnishi, T.; Lippmaa, M.; Ono, K.; Kawasaki, M.; Koinuma, H.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 144-147, 06.2005, p. 443-446.

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

Kobayashi, D, Hashimoto, R, Chikamatsu, A, Kumigashira, H, Oshima, M, Ohnishi, T, Lippmaa, M, Ono, K, Kawasaki, M & Koinuma, H 2005, 'Sr surface segregation and water cleaning for atomically controlled SrTiO₃ (0 0 1) substrates studied by photoemission spectroscopy', Journal of Electron Spectroscopy and Related Phenomena, vol. 144-147, pp. 443-446. https://doi.org/10.1016/j.elspec.2005.01.167

Kobayashi, D. ; Hashimoto, R. ; Chikamatsu, A. ; Kumigashira, H. ; Oshima, M. ; Ohnishi, T. ; Lippmaa, M. ; Ono, K. ; Kawasaki, M. ; Koinuma, H. / Sr surface segregation and water cleaning for atomically controlled SrTiO₃ (0 0 1) substrates studied by photoemission spectroscopy. In: Journal of Electron Spectroscopy and Related Phenomena. 2005 ; Vol. 144-147. pp. 443-446.

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abstract = "The chemical properties and electronic structures of atomically flat SrTiO3 (0 0 1) substrates with various surface treatments have been investigated by high-resolution synchrotron-radiation photoemission spectroscopy. We have found that an annealing process causes the segregation of Sr oxides at the TiO2-terminated surface. We demonstrate that the use of water-cleaning process is effective as a removal technique for Sr oxides segregated on TiO2-terminated surfaces with preserving the surface morphology and chemical bonding states of the topmost TiO2-terminated surfaces.",

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AU - Kobayashi, D.

AU - Hashimoto, R.

AU - Chikamatsu, A.

AU - Kumigashira, H.

AU - Oshima, M.

AU - Ohnishi, T.

AU - Lippmaa, M.

AU - Ono, K.

AU - Kawasaki, M.

AU - Koinuma, H.

PY - 2005/6

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AB - The chemical properties and electronic structures of atomically flat SrTiO3 (0 0 1) substrates with various surface treatments have been investigated by high-resolution synchrotron-radiation photoemission spectroscopy. We have found that an annealing process causes the segregation of Sr oxides at the TiO2-terminated surface. We demonstrate that the use of water-cleaning process is effective as a removal technique for Sr oxides segregated on TiO2-terminated surfaces with preserving the surface morphology and chemical bonding states of the topmost TiO2-terminated surfaces.

KW - Photoemission spectroscopy

KW - SrTiO substrates

KW - TiO -terminated surface

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