| 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 Author | Ma, Song(songma@imr.ac.cn) ; Gao, Xuan P. A.(xuan.gao@case.edu) |
| 2018-10-01 | |
| Source Publication | NANO LETTERS
 |
| ISSN | 1530-6984 |
| Volume | 18Issue:10Pages:6538-6543 |
| Abstract | 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. |
| Keyword | Magneto-transport Drude model topological insulator linear magneto-resistance |
| Funding Organization | NSF ; Natural Science Foundation of China (NSFC) |
| DOI | 10.1021/acs.nanolett.8b03113 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS Subject | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| WOS ID | WOS:000447355400060 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/129692 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Ma, Song; Gao, Xuan P. A. |
| Affiliation | 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 |
| 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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