Intrinsic carrier mobility of Dirac cones: The limitations of deformation potential theory

doi:10.1063/1.4897533

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	Intrinsic carrier mobility of Dirac cones: The limitations of deformation potential theory
	Li, Zhenzhu ; Wang, Jinying ; Liu, Zhirong 1
刊名	JOURNAL OF CHEMICAL PHYSICS
	2014-10-14
卷号	141 期号:14
ISSN号	0021-9606
DOI	10.1063/1.4897533
英文摘要	An analytic formula for the intrinsic carrier mobility of Dirac cones under acoustic phonon scattering conditions was obtained for 2D systems such as graphene and graphyne. The influences of both the transverse acoustic (TA) and longitudinal acoustic phonon modes and that of the anisotropy were considered. Some extraordinary characteristics unlike those predicted by the deformation potential theory were revealed: the mobility at the neutrality point is proportional to 1/T-3, where T is the temperature; also, carrier scattering by the TA phonons dominates the mobility of graphene, which explains the overestimation of the measured deformation potential of graphene in previous experiments. The theory was combined with first-principles calculations to determine the mobility of graphene and five graphynes with Dirac cones. It was predicted that most graphynes will have much higher mobility than graphene because of the suppression of the scattering by the TA phonons. (C) 2014 AIP Publishing LLC.
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000343988500010
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/51079]
专题	中国科学院化学研究所
通讯作者	Liu, Zhirong
作者单位	1.Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China 2.Peking Univ, Ctr Nanochem, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China 3.Peking Univ, Beijing Natl Lab Mol Sci BNLMS, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhenzhu,Wang, Jinying,Liu, Zhirong. Intrinsic carrier mobility of Dirac cones: The limitations of deformation potential theory[J]. JOURNAL OF CHEMICAL PHYSICS,2014,141(14).
APA	Li, Zhenzhu,Wang, Jinying,&Liu, Zhirong.(2014).Intrinsic carrier mobility of Dirac cones: The limitations of deformation potential theory.JOURNAL OF CHEMICAL PHYSICS,141(14).
MLA	Li, Zhenzhu,et al."Intrinsic carrier mobility of Dirac cones: The limitations of deformation potential theory".JOURNAL OF CHEMICAL PHYSICS 141.14(2014).