Two-dimensional transport and strong spin-orbit interaction in SrMnSb_2

作     者：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 Raman Sankar Fang-Cheng Chou 夏正才 修发贤 

作者机构：State Key Laboratory of Surface Physics and Department of Physics Fudan University Collaborative Innovation Center of Advanced Microstructures Wuhan National High Magnetic Field Center Huazhong University of Science and Technology Center for Condensed Matter Science "National" Taiwan University Institute for Nanoelectronic Devices and Quantum Computing Fudan University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2018年第27卷第1期

页      面：203-208页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：Project supported by the National Key Research and Development Program of China(Grant No.2017YFA0303302) the National Natural Science Foundation of China(Grant Nos.61322407,11474058,and 61674040) 

主　　题：high field transport spin-orbit interaction anisotropic g factor bulk quantum Hall effect 

摘      要：We have carried out magneto-transport measurements for single crystal SrMnSb2. Clear Shubnikov-de Haas oscil- lations 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 confine- ment 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.