Phononic Heat Conduction in Disordered Crystals

被引：0
|
作者：
Dhar, Abhishek [1 ]
机构：
[1] Raman Res Inst, Bangalore 560080, Karnataka, India
来源：
SOLID STATE PHYSICS: PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM 2010, PTS A AND B | 2011年 / 1349卷
关键词：
D O I：
10.1063/1.3605724
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We investigate the question as to whether disordered harmonic crystals in two and three dimensions have a finite thermal conductivity. A heuristic argument using localization theory and kinetic theory is given to estimate the system size dependence of the current. Numerical results testing these predictions are then discussed. The numerical studies are based on the Landauer formula using phonon transmission and also on nonequilibrium simulations. The role of ballistic and diffusive phonon modes and the effect of boundary conditions are critically analyzed.
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页码：6 / 6
页数：1
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