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    题名: Breakdown of Rigid-Unit vibrations in layered semiconductors under pressure : application to germanium sulfide
    作者: Hsueh, H.C.
    贡献者: 淡江大學物理學系
    日期: 1995-07
    上传时间: 2011-10-24 10:54:39 (UTC+8)
    摘要: A combination of high-sensitivity Raman scattering and ab initio computer simulations is used to explore the lattice dynamics of the prototypical layered semiconductor GeS under hydrostatic pressure. The observed and calculated pressure responses of the Ag layer shear mode are in excellent agreement over the entire pressure range of the experiments (0 to 50 kbar). Examination of the calculated phonon eigenvectors reveals that the "rigid-layer" model is an appropriate description of the lattice dynamics only under near-ambient-pressure conditions and that substantial mode admixture occurs under compression.
    關聯: Europhysics letters 31, pp.151
    DOI: 10.1209/0295-5075/31/3/005
    显示于类别:[物理學系暨研究所] 期刊論文

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