Non-Drude Magneto-Transport Behavior in a Topological Crystalline Insulator/Band Insulator Heterostructure

doi:10.1021/acs.nanolett.8b03113

IMR OpenIR

	Non-Drude Magneto-Transport Behavior in a Topological Crystalline Insulator/Band Insulator Heterostructure
	Liu, Chieh-Wen 1; Wei, Feng 2,3; Premasiri, Kasun 1; Liu, Shuhao 1; Ma, Song 2; Zhang, Zhidong 2; Gao, Xuan P. A.1
通讯作者	Ma, Song(songma@imr.ac.cn) ; Gao, Xuan P. A.(xuan.gao@case.edu)
	2018-10-01
发表期刊	NANO LETTERS
ISSN	1530-6984
卷号	18 期号:10 页码:6538-6543
摘要	The Drude model is one of the most fundamental models used to understand the electronic carrier transport in materials, including recently discovered topological materials. Here, we present a magneto-transport study revealing the non-Drude transport behavior in a heterostructure of topological crystalline insulator (TCI) SnTe and band insulator PbTe which exhibits a nonsaturating linear magneto-resistance (MR) effect, a novel phenomenon widely observed in topological materials with gapless dispersion. It is shown that in the van der Pauw geometry in which the longitudinal and transverse magneto-resistances are measured to extract the magneto-conductivity, the two-band Drude model is not sufficient to self-consistently describe both the longitudinal and transverse magneto-conductivities. Furthermore, in the Corbino geometry, which directly measures the longitudinal magneto-conductivity sigma(xx)(B) for a straightforward comparison with the Drude model, the MR, 1/sigma(xx)(B), still reveals a large linear MR effect, in direct discrepancy with the Drude model. While shining further light on the multiple-carrier transport in TCI, this study highlights an unusual magneto-transport character of topological materials that challenges the standard Drude picture of electron transport.
关键词	Magneto-transport Drude model topological insulator linear magneto-resistance
资助者	NSF ; Natural Science Foundation of China (NSFC)
DOI	10.1021/acs.nanolett.8b03113
收录类别	SCI
语种	英语
资助项目	NSF[DMR-1607631] ; Natural Science Foundation of China (NSFC)[51571195] ; Natural Science Foundation of China (NSFC)[51331006] ; Natural Science Foundation of China (NSFC)[51590883]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000447355400060
出版者	AMER CHEMICAL SOC
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/129692
专题	中国科学院金属研究所
通讯作者	Ma, Song; Gao, Xuan P. A.
作者单位	1.Case Western Reserve Univ, Dept Phys, 2076 Adelbert Rd, Cleveland, OH 44106 USA 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Chieh-Wen,Wei, Feng,Premasiri, Kasun,et al. Non-Drude Magneto-Transport Behavior in a Topological Crystalline Insulator/Band Insulator Heterostructure[J]. NANO LETTERS,2018,18(10):6538-6543.
APA	Liu, Chieh-Wen.,Wei, Feng.,Premasiri, Kasun.,Liu, Shuhao.,Ma, Song.,...&Gao, Xuan P. A..(2018).Non-Drude Magneto-Transport Behavior in a Topological Crystalline Insulator/Band Insulator Heterostructure.NANO LETTERS,18(10),6538-6543.
MLA	Liu, Chieh-Wen,et al."Non-Drude Magneto-Transport Behavior in a Topological Crystalline Insulator/Band Insulator Heterostructure".NANO LETTERS 18.10(2018):6538-6543.