Angle-dependent magnetoresistance and quantum oscillations in high-mobility semimetal LuPtBi. (5th April 2017)

• Record Type: Journal Article
• Authors: Xu, Guizhou; Hou, Zhipeng; Wang, Yue; Zhang, Xiaoming; Zhang, Hongwei; Liu, EnKe; Xi, Xuekui; Xu, Feng; Wu, Guangheng; Zhang, Xi-xiang; Wang, Wenhong
• Is Part Of: Journal of physics. Volume 29:Number 19(2017)
• Publication Date: 2017-04-05
• Subjects: LuPtBi -- large magnetoresistance -- quantum oscillations -- Fermi surface; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aa6695
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: The recent discovery of ultrahigh mobility and large positive magnetoresistance in the topologically non-trivial half-Heusler semimetal LuPtBi provides a unique playground for studying exotic physics and significant perspective for device applications. As an fcc-structured electron–hole-compensated semimetal, LuPtBi theoretically exhibits six symmetrically arranged anisotropic electron Fermi pockets and two nearly-spherical hole pockets, offering the opportunity to explore the physics of Fermi surfaces with simple angle-related magnetotransport properties. In this work, through angle-dependent transverse magnetoresistance measurements, in combination with high-field SdH quantum oscillations, we aimed to map out a Fermi surface with six anisotropic pockets in the high-temperature and low-field regime, and furthermore, identify a possible magnetic field driven Fermi surface change at lower temperatures. Reasons account for the Fermi surface change in LuPtBi are discussed in terms of the field-induced electron evacuation due to Landau quantization.