陈慧珉,常红,李建宝

• 1:太原科技大学应用科学学院

摘要(Abstract)：

通过平面波展开法计算了以正方点阵排列的二维各向异性声子晶体(AlAs/GaAs)的带隙结构,得到频散曲线和带隙宽度随材料参数变化关系。计算结果表明基体和散射体材料参数有较大差别时,面内模态的能带结构中没有明显的完全带隙,但有方向带隙的存在,其中的ρa/ρb对面内带隙的影响较大,C44a/C44b和C11a/C11b对面内带隙影响较小;而面外模态的能带结构中存在明显的完全带隙,其中C44a/C44b对面外带隙起决定作用,ρa/ρb值略有影响。

关键词(KeyWords)： 声子晶体;能带结构;带隙;平面波展开法;材料参数

Abstract:

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基金项目(Foundation): 太原科技大学博士科研基金(20112012)

作者(Author): 陈慧珉,常红,李建宝

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