半无限准周期原胞半导体超晶格的表面等离子激元

本文把文献[1,2]的方法推广用于一个更普适的模型,导出了一个适用范围较大的条件,由此出发计算了半无限的第Ⅰ类、第Ⅱ类和Ⅱ-Ⅵ族半导体超晶格的表面等离子谱。结果表明,由于准周期原胞超晶格对于垂直于超晶格轴的截面,不存在反映对称性,因之当表面取在原胞的F_m个不同界面上时(F_m,是Fibonacci数),其表面模式有千姿百态的变化。这种变化有一定的规律,因之这方面的研究将使我们有可能根据理论或实验研究的需要,来设计特定的半无限准周期原胞超晶格,使其表面等离子谱具有期关键词：

SURFACE PLASMONS IN QUASIPERIODIC SEMICONDUCTOR SUPERLATTICE

Based on a model a little bit complicated than that in ref. [2] , the mathematical method of ref. [1] was used to yield an universal condition of dispersion. By means of this condition, the surface plasmon spectra of the quasiperiodic semiconductor superlattice of type-I, type-II and II-VI compounds were discussed.The results show that bacause of the break of reflection symmetry in the plane perpendicular to the axis of the superlattice, when the surface is located at the F_m different interfaces of the primary cell, the spectrum of surface plasmon shows a great deal of patterns for each choice of sets of the parameters. (F_m is the Fibonacci number).