Effects of phonon interference through long range interatomic bonds on thermal interface conductance
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 therm...
Збережено в:
| Дата: | 2016 |
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| Автори: | , , , , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2016
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| Назва видання: | Физика низких температур |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/129285 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Effects of phonon interference through long range interatomic bonds on thermal interface conductance / Haoxue Han, Lei Feng, Shiyun Xiong, Takuma Shiga, Junichiro Shiomi, Sebastian Volz, Yuriy A. Kosevich // Физика низких температур. — 2016. — Т. 42, № 8. — С. 902-908. — Бібліогр.: 33 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | 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. |
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