Host Isotope Effect on the Local Vibration Modes of VH2 and VOH2 Defects in Isotopically Enriched 28Si, 29Si and 30Si Single Crystals
スポンサーリンク
概要
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Local vibrational modes of a vacancy with two hydrogen atoms (VH2) and of a vacancy with one oxygen and two-hydrogen atoms (VOH2) in silicon have been investigated using isotopically enriched 28Si, 29Si, and 30Si single crystals. Infrared absorption spectroscopy revealed shifts in the Si–H stretch frequencies of the two defects when the mass of the silicon host atoms was changed. The observed stretch frequencies can for each defect be accounted for with a simple vibrational model based on two coupled Morse oscillators. The anharmonic contribution to the local vibrational mode frequencies of these two defects is evaluated.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2005-10-15
著者
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Itoh Kohei
Department Of Applied Physics And Physico-informatics And Crest-jst Keio University
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Nielsen Brian
Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus, Denmark
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Pereira Rui
Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus, Denmark
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Ohya Takeru
Department of Applied Physics and CREST-JST, Keio University, Yokohama 223-8522, Japan
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Itoh Kohei
Department of Applied Physics and CREST-JST, Keio University, Yokohama 223-8522, Japan
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