Polarization resolved analysis of phonon transport in a multi-terminal system

被引：0
|
作者：
顾云风 [1 ]
朱留通 [1 ]
吴晓莉 [1 ]
机构：
[1] College of Electronic and Mechanical Engineering, Nanjing Forestry University
来源：
Chinese Physics B | 2019年 / 28卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Green’s function method; phonon transport; multi-terminal systems;
D O I：
暂无
中图分类号：
TB383.1 []; TQ127.11 [];
学科分类号：
070205 ; 080501 ; 0817 ; 1406 ;
摘要：
The atomistic Green’s function method is improved to compute the polarization resolved phonon transport in a multiterminal system. Based on the recent developments in literature, the algorithm is simplified. The complex phonon band structure of a semi-infinite periodic terminal is obtained by the generalized eigenvalue equation. Then both the surface Green’s function and phonon group velocity in the terminal are determined from the wave modes propagating away from the scattering region along the terminal. With these key ingredients, the individual phonon mode transmittance between the terminals can be calculated. The feasibility and validity of the method are demonstrated by the chain example compared with the wave packet method, and an example of graphene nanojunction with three terminals.
引用
收藏
页码：212 / 218
页数：7
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