Minimum thermal conductance in graphene and boron nitride superlattice

被引：88

作者：

Jiang, Jin-Wu ^{[1
,2
]}

Wang, Jian-Sheng ^{[1
,2
]}

Wang, Bing-Shen ^{[3
,4
]}

机构：

[1] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

[2] Natl Univ Singapore, Ctr Computat Sci & Engn, Singapore 117542, Singapore

[3] Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China

[4] Chinese Acad Sci, State Key Lab Semicond Superlattice & Microstruct, Beijing 100083, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 04期

关键词：

CONDUCTIVITY; TRANSPORT;

D O I：

10.1063/1.3619832

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The minimum thermal conductance versus supercell size (d(s)) is revealed in graphene and boron nitride superlattice with d(s) far below the phonon mean free path. The minimum value is reached at a constant ratio of d(s)/L approximate to 5%, where L is the thickness of the superlattice; thus, the minimum point of d(s) depends on L. The phenomenon is attributed to the localization property and the number of confined modes in the superlattice. With the increase of d(s), the localization of the confined mode is enhanced while the number of confined modes decreases, which directly results in the minimum thermal conductance. (C) 2011 American Institute of Physics. [doi:10.1063/1.3619832]

引用

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