Two-dimensional transport and strong spin–orbit interaction in SrMnSb2*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). (January 2018)

• Record Type: Journal Article
• Authors: Ling 凌, Jiwei 霁玮; Liu 刘, Yanwen 彦闻; Jin 金, Zhao 昭; Huang 黄, Sha 沙; Wang 王, Weiyi 伟懿; Zhang 张, Cheng 成; Yuan 袁, Xiang 翔; Liu 刘, Shanshan 姗姗; Zhang 张, Enze 恩泽; Huang 黄, Ce 策; Sankar, Raman; Chou, Fang-Cheng; Xia 夏, Zhengcai 正才; Xiu 修, Faxian 发贤
• Is Part Of: Chinese physics B. Volume 27:Number 1(2018)
• Publication Date: 2018-01
• Subjects: high field transport -- spin-orbit interaction -- anisotropic g factor -- bulk quantum Hall effect; 75.47.-m -- 75.70.Tj -- 73.43.-f; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1674-1056/27/1/017504
• Languages: English
• ISSNs: 1674-1056

Abstract

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.