结构缺陷对量子波导腔中热导的调控  

Effects of controllable defects on thermal conductance in a nanowire with a quantum box

作　　者：聂六英[1] 李春先[1] 周晓萍[1] 程芳[1] 王成志[1] 

机构地区：[1]长沙理工大学物理与电子科学学院,长沙410114

出　　处：《物理学报》2011年第11期494-499,共6页Acta Physica Sinica

基　　金：湖南省自然科学基金(批准号:09JJ5005);国家自然科学基金(批准号:10947134;11004019)资助的课题~~

摘　　要：利用散射矩阵方法和标量模型,研究了低温下可调缺陷对量子波导腔的热导的影响.改变缺陷的参数能控制热导,缺陷的尺寸和位置能导致热导的改变,而且不同种类的缺陷也能导致热导随温度的变化.By using the scattering-matrix method and the scalar model of elasticity,we investigate the effect of controllable defects on low temperature thermal conductance in a nanowire with a quantum box geometry.It is found that the thermal conductance can be controlled by adjusting the parameters of the defects.The size and the position of the defect can induce the variation in thermal conductance.It is also found that the behavior of the thermal conductance versus temperature is different for different types of defects.

关 键 词：声学声子输运 热导 量子结构 

分 类 号：O471.1[理学—半导体物理]