Phonon transport and thermal conductivity in an acoustic filter

被引：3
|
作者：
Lu Jian-Duo [1 ]
Shao Liang
Hou Yang-Lai
Yi Lin
机构：
[1] Wuhan Univ Sci & Technol, Dept Appl Phys, Wuhan 430081, Peoples R China
[2] Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2007年 / 24卷 / 03期
关键词：
D O I：
10.1088/0256-307X/24/3/057
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the phonon ballistic transmission and the thermal conductivity in a dielectric quantum structure. It is found that these observable quantities sensitively depend on geometric parameters, and are of quantum character. The total transmission coefficient as a function of the reduced waveguide-length exhibits periodical behaviour and the reduced thermal conductance decreases below the ideal universal value for the low temperature. Our results show that one can control the thermal conductivity of the structure and make all kinds of acoustic filters to match practical requirements in devices by adjusting the geometric parameters.
引用
收藏
页码：793 / 796
页数：4
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