Effects of phonon interference through long range interatomic bonds on thermal interface conductance


          

刊名：Low temperature physics: Simultaneous Russian - English publication
作者：Han, Haoxue（Tech Univ Darmstadt, Eduard Zintl Inst Anorgan & Phys Chem, Theoret Phys Chem, 4 Alarich Weiss Str, D-64287 Darmstadt, Germany）
Feng, Lei（Univ Tokyo, Dept Mech Engn, Bunkyo Ku, 7-3-lHongo, Tokyo, Japan）
Xiong, Shiyun（Univ Paris Saclay, Cent Supelec, Lab EM2C, CNRS, F-92295 Chatenay Malabry, France）
Shiga, Takuma（Univ Tokyo, Dept Mech Engn, Bunkyo Ku, 7-3-lHongo, Tokyo, Japan）
Shiomi, Junichiro（Univ Tokyo, Dept Mech Engn, Bunkyo Ku, 7-3-lHongo, Tokyo, Japan）
Volz, Sebastian（Univ Paris Saclay, Cent Supelec, Lab EM2C, CNRS, F-92295 Chatenay Malabry, France）
Kosevich, Yuriy A.（Russian Acad Sci, Semenov Inst Chem Phys, 4 Kosygin Str, Moscow 119991, Russia）
刊号：534B0059
ISSN：1063-777X
出版年：2016
年卷期：2016, vol.42, no.8
页码：711-716
总页数：6
分类号：TB13
语种：eng
文摘：We investigate the role of two-path destructive phonon interference induced by interatomic bonds beyond the nearest neighbor in the thermal conductance of a silicon-germanium-like metasurface. Controlled by the ratio between the second and first nearest-neighbor harmonic force constants, the thermal conductance across a germanium atomic plane in the silicon lattice exhibits a trend switch induced by the destructive interference of the nearest-neighbor phonon path with a direct path bypassing the defect atoms. We show that bypassing of the heavy isotope impurity is crucial to the realization of the local minimum in the thermal conductance. We highlight the effect of the second phonon path on the distinct behaviors of the dependence of the thermal conductance on the impurity mass ratio. All our conclusions are confirmed both by Green's Function calculations for the equivalent quasi-1D lattice models and by molecular dynamics simulations. Published by AIP Publishing.



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