字体
拉曼光谱
拉曼散射
物理
散射
光学
声子
X射线拉曼散射
材料科学
凝聚态物理
计算机科学
操作系统
作者
Yu. G. Pashkevich,V. P. Gnezdilov,A. V. Yeremenko,P. Lemmens,G. Güntherodt,W. Reichardt,M. Braden,S. V. Shiryaev,S. N. Barilo,А. В. Солдатов
出处
期刊:International Journal of Modern Physics B
[World Scientific]
日期:2000-12-20
卷期号:14 (29n31): 3637-3642
被引量:2
标识
DOI:10.1142/s0217979200004155
摘要
High quality single crystals of Ba 1-x K x BiO 3 ( x =0; 0.15, 0.2, 0.33, 0.42) have been investigated by Raman light scattering in the 5-300 K temperature range. All spectra are interpreted as phonon states that are introduced in Raman scattering by folding back of modes from different points of the zone boundary due to structural distortions. Direct comparison of our spectra with inelastic neutron scattering data provides clear evidence for the existence of local R-type tilt and breathing distortions together with some additional distortion possibly related to the M-point.
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