Optical Phonon Modes and Localized Effective Charges of Transition-Metal Dichalcogenides
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概要
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Reflection spectra have been measured in the far infrared region (10 cm '500 cm-') for several kinds of crystals of transition-metal diehalcogenides (TX.).Optical phonon frequencies of' infrared active mode (E 3- c) are determined forthe group TV compounds HfSe., ZrSe. and TiSe. and for the group Vl compoundsMoS., Mode., WS. and WSe.. Using available Raman data the localizedeffective charges (e7) of these materials are estimated. The nature of the bondingin TX. is found to be well described in terms of the estimated e7 rather than bythe macroscopic effective charge e7.
- 社団法人日本物理学会の論文
- 1978-07-15
著者
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Tanaka Shoji
Department Of Applied Physics Waseda University
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Uchida Shin-ichi
Department Of Applied Physics University Of Tokyo
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Tanaka Shoji
Department Of Applied Physics University Of Tokyo
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Tanaka Shoji
Department Of Applied Physics Faculty Fo Engineering University Of Tokyo
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