声表面波单电子输运器件频率响应特性的分析  

Analysis of frequency response of surface-acoustic-wave driving single-electron-transport device

作　　者：李宏[1] 许佳平[1] 赵建君[1] 路川[2] 李玲[3] 高洁[1] 

机构地区：[1]四川大学物理科学与技术学院,成都610064 [2]中国测试技术研究院,成都610021 [3]四川师范大学物理学院低维结构物理实验室,成都610066

出　　处：《四川大学学报（自然科学版）》2008年第3期591-595,共5页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金重点项目(60436010);国家科技支撑计划课题(2006BAF06B09)

摘　　要：在GaAs/Al0.3Ga0.7As异质结上制作千兆赫兹的声表面波(SAW)单电子输运(SAWSET)器件,实验上利用网络分析仪测得了SAWSET器件的频率响应特性.借助耦合模理论和P矩阵级联算法,对SAW在SAWSET器件中的传播特性,尤其是对其频率响应进行了分析.结果表明理论计算值与实验符合较好.The surface-acoustic-wave（SAW） driving single-electron-transport （SAWSET） device with the frequency of gigahertz was fabricated on GaAs/Al0.3Ga0.7As heterostructure. Frequency response characteristic of SAWSET devices was obtained by using the network analyzer. Employing coupling of modes theory, with the help of P-matrix, we analyze the propagation performance of SAW in SAWSET devices. Especially, we calculate the frequency response of SAWSET devices. Excellent agreement between theory and measurement is found.

关 键 词：声表面波 叉指换能器 耦合模理论 频率响应 

分 类 号：O424[理学—声学]