Two-dimensional transport and strong spin-orbit interaction in SrMnSb2

doi:10.1088/1674-1056/27/1/017504

中国物理B ›› 2018, Vol. 27 ›› Issue (1): 17504-017504.doi: 10.1088/1674-1056/27/1/017504

• SPECIAL TOPIC—Non-equilibrium phenomena in soft matters • 上一篇下一篇

Two-dimensional transport and strong spin-orbit interaction in SrMnSb₂

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)

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

出版日期:2018-01-05 发布日期:2018-01-05
通讯作者: Faxian Xiu, Zhengcai Xia E-mail:Faxian@fudan.edu.cn;Xia9020@hust.edu.cn.cn
基金资助:
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).

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

Online:2018-01-05 Published:2018-01-05
Contact: Faxian Xiu, Zhengcai Xia E-mail:Faxian@fudan.edu.cn;Xia9020@hust.edu.cn.cn
Supported by:
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).

摘要/Abstract

摘要： 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 (R_xy) 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.

关键词: high field transport, spin-orbit interaction, anisotropic g factor, bulk quantum Hall effect

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 (R_xy) 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.

Key words: high field transport, spin-orbit interaction, anisotropic g factor, bulk quantum Hall effect

中图分类号: (Magnetotransport phenomena; materials for magnetotransport)

75.47.-m

75.70.Tj (Spin-orbit effects) 73.43.-f (Quantum Hall effects)

凌霁玮, 刘彦闻, 金昭, 黄沙, 王伟懿, 张成, 袁翔, 刘姗姗, 张恩泽, 黄策, 夏正才, 修发贤. Two-dimensional transport and strong spin-orbit interaction in SrMnSb₂[J]. 中国物理B, 2018, 27(1): 17504-017504.

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Two-dimensional transport and strong spin-orbit interaction in SrMnSb₂

Two-dimensional transport and strong spin-orbit interaction in SrMnSb₂

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