Effects of phonon interference through long range interatomic bonds on thermal interface conductance
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Effects of phonon interference through long range interatomic bonds on thermal interface conductance
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| Creator |
Haoxue Han
Lei Feng Shiyun Xiong Takuma Shiga Junichiro Shiomi Volz, Sebastian Kosevich, Yu.A. |
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| Subject |
К 75-летию открытия теплового сопротивления Капицы
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| Description |
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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| Date |
2018-01-18T17:24:47Z
2018-01-18T17:24:47Z 2016 |
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| Type |
Article
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| Identifier |
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.
0132-6414 PACS: 65.80.–g, 43.40.+s, 63.20.–e, 66.70.Lm, http://dspace.nbuv.gov.ua/handle/123456789/129285 |
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| Language |
en
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| Relation |
Физика низких температур
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| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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