title: Angle-dependent magnetoresistance and quantum oscillations in high-mobility semimetal LuPtBi.
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.
authors.affiliation: School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China. State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: Guizhou
authors.initials: G
authors.lastname: Xu
authors.forename: Zhipeng
authors.initials: Z
authors.lastname: Hou
authors.forename: Yue
authors.initials: Y
authors.lastname: Wang
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Zhang
authors.forename: Hongwei
authors.initials: H
authors.lastname: Zhang
authors.forename: EnKe
authors.initials: E
authors.lastname: Liu
authors.forename: Xuekui
authors.initials: X
authors.lastname: Xi
authors.forename: Feng
authors.initials: F
authors.lastname: Xu
authors.forename: Guangheng
authors.initials: G
authors.lastname: Wu
authors.forename: Xi-Xiang
authors.initials: XX
authors.lastname: Zhang
authors.forename: Wenhong
authors.initials: W
authors.lastname: Wang