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GexSi1-x/Si超晶格中周期不均匀对折叠声学声子拉曼线宽的影响
The Influence of the Period Inhomogeneity on the Linewidth of the Folded Acoustic Phonons in GexSi1-x/Si Superlattices
【摘要】 本文报导了在 GeSi1-x/Si 超晶格中观察到了超晶格周期不均匀导致的折叠声学声子拉曼谱线展宽,这种谱线展宽与折叠指数（m）有关,折叠声学声子的谱线越宽,m 相同的折叠声学声子具有相同的线宽。
【Abstract】 In the Raman spectrum of a GexSi1—/Si superlattice,we observed such broadening of linewidth of the folded longitudinal acoustic（FLA）phonons that the imcrease of the linewidth is proportional to the folded order of FLA phonons.A simple theoretical analysis suggests that above variations in linewidths arise from the inhomogeneity in the superlattice period.
- 【文献出处】 光散射学报 ,Chinese Journal of Light Scattering , 编辑部邮箱 ,1993年01期
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