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Non-Drude Magneto-Transport Behavior in a Topological Crystalline Insulator/Band Insulator Heterostructure
Liu, Chieh-Wen1; Wei, Feng2,3; Premasiri, Kasun1; Liu, Shuhao1; Ma, Song2; Zhang, Zhidong2; Gao, Xuan P. A.1
Corresponding AuthorMa, Song(songma@imr.ac.cn) ; Gao, Xuan P. A.(xuan.gao@case.edu)
2018-10-01
Source PublicationNANO LETTERS
ISSN1530-6984
Volume18Issue:10Pages:6538-6543
AbstractThe 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.
KeywordMagneto-transport Drude model topological insulator linear magneto-resistance
Funding OrganizationNSF ; Natural Science Foundation of China (NSFC)
DOI10.1021/acs.nanolett.8b03113
Indexed BySCI
Language英语
Funding ProjectNSF[DMR-1607631] ; Natural Science Foundation of China (NSFC)[51571195] ; Natural Science Foundation of China (NSFC)[51331006] ; Natural Science Foundation of China (NSFC)[51590883]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000447355400060
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/129692
Collection中国科学院金属研究所
Corresponding AuthorMa, Song; Gao, Xuan P. A.
Affiliation1.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
Recommended Citation
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.
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