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Two-dimensional transport and strong spin-orbit interaction in SrMnSb2 |
| Jiwei Ling(凌霁玮)1,2, Yanwen Liu(刘彦闻)1,2, Zhao Jin(金昭)3, Sha Huang(黄沙)3, Weiyi Wang(王伟懿)1,2, Cheng Zhang(张成)1,2, Xiang Yuan(袁翔)1,2, Shanshan Liu(刘姗姗)1,2, Enze Zhang(张恩泽)1,2, Ce Huang(黄策)1,2, Raman Sankar4, Fang-Cheng Chou4, Zhengcai Xia(夏正才)3, Faxian Xiu(修发贤)1,2,5 |
1 State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China;
2 Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China;
3 Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China;
4 Center for Condensed Matter Science, "National"Taiwan University, Taipei 11529, Taiwan, China;
5 Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, China |
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Abstract We have carried out magneto-transport measurements for single crystal SrMnSb2. Clear Shubnikov-de Haas oscillations were resolved at relatively low magnetic field around 4 T, revealing a quasi-2D Fermi surface. We observed a development of quantized plateaus in Hall resistance (Rxy) at high pulsed fields up to 60 T. Due to the strong 2D confinement and layered properties of the samples, we interpreted the observation as bulk quantum Hall effect that is contributed by the parallel 2D conduction channels. Moreover, the spin degeneracy was lifted leading to Landau level splitting. The presence of anisotropic g factor and the formation of the oscillation beating pattern reveal a strong spin-orbit interaction in the SrMnSb2 system.
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Accepted manuscript online:
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PACS:
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75.47.-m
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(Magnetotransport phenomena; materials for magnetotransport)
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75.70.Tj
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(Spin-orbit effects)
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73.43.-f
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(Quantum Hall effects)
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| Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0303302) and the National Natural Science Foundation of China (Grant Nos. 61322407, 11474058, and 61674040). |
Corresponding Authors:
Faxian Xiu, Zhengcai Xia
E-mail: Faxian@fudan.edu.cn;Xia9020@hust.edu.cn.cn
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Cite this article:
Jiwei Ling(凌霁玮), Yanwen Liu(刘彦闻), Zhao Jin(金昭), Sha Huang(黄沙), Weiyi Wang(王伟懿), Cheng Zhang(张成), Xiang Yuan(袁翔), Shanshan Liu(刘姗姗), Enze Zhang(张恩泽), Ce Huang(黄策), Raman Sankar, Fang-Cheng Chou, Zhengcai Xia(夏正才), Faxian Xiu(修发贤) Two-dimensional transport and strong spin-orbit interaction in SrMnSb2 2018 Chin. Phys. B 27 017504
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