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https://elib.bsu.by/handle/123456789/307001
Title: | Effect of morphology on the phonon thermal conductivity in Si/Ge superlattice nanowires |
Authors: | Khaliava, I.I. Khamets, A.L. Safronov, I.V. Filonov, A.B. Suemasu, T. Migas, D.B. |
Keywords: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
Issue Date: | 2023 |
Publisher: | IOPScience |
Citation: | Japanese Journal of Applied Physics 62 (SD), SD1013 (2023) |
Abstract: | We used nonequilibrium molecular dynamics to investigate the role of morphology in the phonon thermal conductivity of 〈100〉, 〈110〉, 〈111〉 and 〈112〉-oriented Si/Ge superlattice nanowires at 300 K. Such nanowires with 〈112〉 growth direction were found to possess the lowest values of the thermal conductivity [1.6 W/(m·K) for a Si and Ge segment thickness of ∼3 nm] due to the lowest average group velocity and highly effective {113} facets and Si/Ge(112) interface for phonon-surface and phonon-interface scattering, respectively. Comparison with homogeneous and core/shell Si and Ge nanowires showed that the superlattice morphology is the most efficient to suppress the thermal conductivity. |
URI: | https://elib.bsu.by/handle/123456789/307001 |
DOI: | 10.35848/1347-4065/aca912 |
Licence: | info:eu-repo/semantics/openAccess |
Appears in Collections: | Кафедра физики твердого тела и нанотехнологий (статьи) |
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