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Anisotropic magnetotransport and exotic longitudinal linear magnetoresistance in WTe2 crystals

Yanfei Zhao, Haiwen Liu, Jiaqiang Yan, Wei An, Jun Liu, Xi Zhang, Huichao Wang, Yi Liu, Hua Jiang, Qing Li, Yong Wang, Xin-Zheng Li, David Mandrus, X. C. Xie, Minghu Pan, and Jian Wang
Phys. Rev. B 92, 041104(R) – Published 6 July 2015
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Abstract

The WTe2 semimetal, as a typical layered transition-metal dichalcogenide, has recently attracted much attention due to an extremely large, nonsaturating parabolic magnetoresistance in the perpendicular field. Here, we report a systematic study of the angular dependence of the magnetoresistance in a WTe2 single crystal. The significant anisotropic magnetotransport behavior in different magnetic field directions and violation of the Kohler's rule are observed. Unexpectedly, when the applied field and excitation current are both parallel to the tungsten chains of WTe2, an exotic large longitudinal linear magnetoresistance as high as 1200% at 15T and 2K is identified. Our results imply that the WTe2 semimetal, due to its balanced hole and electron populations, seems to be the first material for which a large longitudinal linear magnetoresistance appears when the external magnetic field is parallel to the applied current. Our work may stimulate studies of double-carrier correlated materials and the corresponding quantum physics.

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  • Received 16 February 2015
  • Revised 11 June 2015

DOI:https://doi.org/10.1103/PhysRevB.92.041104

©2015 American Physical Society

Authors & Affiliations

Yanfei Zhao1,2, Haiwen Liu1,2, Jiaqiang Yan3,4, Wei An2,5, Jun Liu6, Xi Zhang1,2, Huichao Wang1,2, Yi Liu1,2, Hua Jiang7, Qing Li8, Yong Wang6, Xin-Zheng Li2,5, David Mandrus3,4, X. C. Xie1,2, Minghu Pan9,*, and Jian Wang1,2,†

  • 1International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China
  • 2Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
  • 3Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
  • 4Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
  • 5School of Physics, Peking University, Beijing 100871, China
  • 6Center of Electron Microscopy, State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
  • 7College of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006, China
  • 8Institute of Functional Nano and Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Science and Technology, Soochow University, Jiangsu 215123, China
  • 9MOE Key Laboratory of Fundamental Physical Quantities Measurements, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China

  • *Corresponding author: mhupan@gmail.com
  • Corresponding author: jianwangphysics@pku.edu.cn

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Issue

Vol. 92, Iss. 4 — 15 July 2015

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