TY - JOUR
T1 - Sr surface segregation and water cleaning for atomically controlled SrTiO3 (0 0 1) substrates studied by photoemission spectroscopy
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
Y1 - 2005/6
N2 - 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.
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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U2 - 10.1016/j.elspec.2005.01.167
DO - 10.1016/j.elspec.2005.01.167
M3 - Article
AN - SCOPUS:20244389406
SN - 0368-2048
VL - 144-147
SP - 443
EP - 446
JO - Journal of Electron Spectroscopy and Related Phenomena
JF - Journal of Electron Spectroscopy and Related Phenomena
ER -