Eigenfrequency and decay factor of the localized phonon in a superlattice with a defect layer
Eigenfrequency and decay factor of the localized phonon in a superlattice with a defect layer
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DOI：
10.1103/physrevb.65.193302
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发表时间：
2002-04
影响因子：
3.7
通讯作者：
S. Mizuno
中科院分区：
文献类型：
--
作者：
S. Mizuno
从理论上研究了含有缺陷层的超晶格中的局域振动模。特别地，我们推导出了这种局域模的本征频率和相应的衰减因子的简单公式。我们的公式清楚地显示了这些量如何依赖于超晶格的组成层以及缺陷层的宽度。这些公式对于系统地理解超晶格中的定域声子是有用的。
We theoretically study the localized vibrational modes in a superlattice with a defect layer. In particular, we derive simple formulas for the eigenfrequency of this localized mode and the corresponding decay factor. Our formulas show explicitly how these quantities depend on the constituent layers of the superlattice and also the width of the defect layer. These formulas are useful for systematic understanding of the localized acoustic phonons in superlattice.