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题名: Thermal conductivity of GaAs/AlAs superlattices: The Umklapp process
作者: Yang, YR ;  Yan, XH ;  Cao, JX ;  Xiao, Y ;  Mao, YL ;  Xiang, J ;  Yu, HL
刊名: CHINESE PHYSICS
出版日期: 2004
卷号: 13, 期号:12, 页码:2109-2114
关键词: QUANTUM-WELL ;  THERMOELECTRIC FIGURE ;  HEAT-CONDUCTION ;  MERIT
学科分类: Physics
通讯作者: Yan, XH , Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China.
部门归属: Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China; Nanjing Univ Aeronaut & Astronaut, Coll Sci, Nanjing 210016, Peoples R China
英文摘要: The 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000225550200023
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13933
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
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.
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