CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Magneto-Transport and Shubnikov–de Haas Oscillations in the Type-II Weyl Semimetal Candidate NbIrTe$_{4}$ Flake |
Xiang-Wei Huang1†, Xiao-Xiong Liu2†, Peng Yu3†, Pei-Ling Li1,4, Jian Cui1, Jian Yi5, Jian-Bo Deng2, Jie Fan1,6, Zhong-Qing Ji1,6, Fan-Ming Qu1,6, Xiu-Nian Jing1,7, Chang-Li Yang1,7, Li Lu1,7, Zheng Liu3**, Guang-Tong Liu1,6** |
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 2Department of Physics, Lanzhou University, Lanzhou 730000 3Centre for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore 4University of Chinese Academy of Sciences, Beijing 100049 5Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo 315201 6Songshan Lake Materials Laboratory, Dongguan 523808 7Collaborative Innovation Center of Quantum Matter, Beijing 100871
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Cite this article: |
Xiang-Wei Huang, Xiao-Xiong Liu, Peng Yu et al 2019 Chin. Phys. Lett. 36 077101 |
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Abstract We report on magnetoresistance, Hall effect, and quantum Shubnikov–de Haas oscillation (SdH) experiments in NbIrTe$_4$ single crystals, which was recently predicted to be a type-II Weyl semimetal. NbIrTe$_4$ manifests a non-saturating and parabolic magnetoresistance at low temperatures. The magneto-transport measurements show that NbIrTe$_4$ is a multiband system. The analysis of the SdH oscillations reveals four distinct oscillation frequencies. Combined with the density-functional theory calculations, we show that they come from two types of Fermi surfaces: electron pocket E$_1$ and hole pocket H$_2$.
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Received: 13 May 2019
Published: 20 June 2019
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PACS: |
71.18.+y
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(Fermi surface: calculations and measurements; effective mass, g factor)
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71.20.Be
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(Transition metals and alloys)
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Fund: Supported by the National Basic Research Program of China under Grant Nos 2015CB921101 and 2016YFA0300600, the National Natural Science Foundation of China under Grant No 11874406, the Singapore National Research Foundation under Grant No NRF-NRFF2013-08, the Tier 2 MOE2016-T2-2-153, and the A*Star QTE Programme. |
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