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Yang, YR; Yan, XH; Cao, JX; Xiao, Y; Mao, YL; Xiang, J; Yu, HL; Yan, XH , Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China.
Thermal conductivity of GaAs/AlAs superlattices: The Umklapp process
Source PublicationCHINESE PHYSICS
KeywordQuantum-well Thermoelectric Figure Heat-conduction Merit
AbstractThe thermal conductivity of GaAs/AlAs superlattices limited by the three-phonon Umklapp process and boundary scattering has been studied theoretically based on the model of lattice dynamics with force constant matrix. It was found that the Umklapp relaxation rate approximates BTw(2)/n with a fitting parameter B. The thermal conductivity increases with the increase of temperature at low temperatures, and would show a peak behaviour at about 60K before falling off at high temperatures. In addition, the thermal conductivity increases with the increase of period thickness of the superlattices.
2004
ISSN1009-1963
Volume13Issue:12Pages:2109-2114
Subject AreaPhysics
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13933
Collection理论物理所科研产出_SCI论文
Corresponding AuthorYan, XH , Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China.
Recommended Citation
GB/T 7714
Yang, YR,Yan, XH,Cao, JX,et al. Thermal conductivity of GaAs/AlAs superlattices: The Umklapp process[J]. CHINESE PHYSICS,2004,13(12):2109-2114.
APA Yang, YR.,Yan, XH.,Cao, JX.,Xiao, Y.,Mao, YL.,...&Yan, XH , Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China..(2004).Thermal conductivity of GaAs/AlAs superlattices: The Umklapp process.CHINESE PHYSICS,13(12),2109-2114.
MLA Yang, YR,et al."Thermal conductivity of GaAs/AlAs superlattices: The Umklapp process".CHINESE PHYSICS 13.12(2004):2109-2114.
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