Acoustic Phonon Thermal Transport through a Nanostructure  

作　　者：李文霞 柳天宇 刘昌龙 

机构地区：[1]Department of Applied Physics, Tianjin University, Tianjin 300072

出　　处：《Chinese Physics Letters》2006年第9期2522-2525,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10547132, and the Young Teacher Foundation of Tianjin University under Grant No 5110117.

摘　　要：Using the scattering matrix method, we investigate the thermal transport m a nanostructure at low temperarures. It is found that phonon transport exhibits some novel and interesting features： resonant transmission, resonant reflection, and small thermal conductance. A comparison between thermal conductances is performed when stress-free and hard-wall boundary conditions are applied for acoustic modes, respectively. The result indicates that the characteristics of the thermal conductance versus temperature for different types of boundary conditions are qualitatively different.Using the scattering matrix method, we investigate the thermal transport m a nanostructure at low temperarures. It is found that phonon transport exhibits some novel and interesting features： resonant transmission, resonant reflection, and small thermal conductance. A comparison between thermal conductances is performed when stress-free and hard-wall boundary conditions are applied for acoustic modes, respectively. The result indicates that the characteristics of the thermal conductance versus temperature for different types of boundary conditions are qualitatively different.

关 键 词：ELECTRON-TRANSPORT HEAT-CONDUCTION QUANTUM WIRES SUPERLATTICES MODE TEMPERATURE NANOWIRES 

分 类 号：TB383[一般工业技术—材料科学与工程]