Carrier balance and linear magnetoresistance in type-II Weyl semimetal WTe2  

作　　者：Xing-Chen Pan Yiming Pan Juan Jiang Huakun Zuo Huimei Liu Xuliang Chen Zhongxia Wei Shuai Zhang Zhihe Wang Xiangang Wan Zhaorong Yang Donglai Feng Zhengcai Xia Liang Li Fengqi Song Baigeng Wang Yuheng Zhang Guanghou Wang 

机构地区：[1]National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and Colleae of Physics. Naniina University. Nanjina 210093. China [2]State Key Laboratory of Surface Physics, Coliaborative Innovation Center of Advanced Microstructures,Department of Physics, and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China [3]Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China [4]High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China

出　　处：《Frontiers of physics》2017年第3期73-80,共8页物理学前沿（英文版）

摘　　要：Unsaturated magnetoresistance （MR） has been reported in type-II Weyl semimetal WTe2, manifested as a perfect compensation of opposite carriers. We report linear MR （LMR） in WTe2 crystals, the onset of which was identified by constructing the MR mobility spectra for weak fields. The LMR further increased and became dominant for fields stronger than 20 T, while the parabolic MR gradually decayed. The LMR was also observed in high-pressure conditions.Unsaturated magnetoresistance （MR） has been reported in type-II Weyl semimetal WTe2, manifested as a perfect compensation of opposite carriers. We report linear MR （LMR） in WTe2 crystals, the onset of which was identified by constructing the MR mobility spectra for weak fields. The LMR further increased and became dominant for fields stronger than 20 T, while the parabolic MR gradually decayed. The LMR was also observed in high-pressure conditions.

关 键 词：WTe2 type-II Weyl semimetal carrier balance linear magnetoresistance 

分 类 号：O511[理学—低温物理] U463.55[理学—物理]