Angle-dependent magnetoresistance and quantum oscillations in high-mobility semimetal LuPtBi

Guizhou Xu, Zhipeng Hou, Yue Wang, Xiaoming Zhang, Hongwei Zhang, Enke Liu, X. K. Xi, Feng Xu, Guangheng Wu, Xixiang Zhang, Wenhong Wang

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The recent discovery of ultrahigh mobility and large positive magnetoresistance in 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 surface with a simple angle-related magnetotransport properties. In this work, through the angle-dependent transverse magnetoresistance measurements, in combination with high-field SdH quantum oscillations, we achieved 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.
Original languageEnglish (US)
Pages (from-to)195501
JournalJournal of Physics: Condensed Matter
Volume29
Issue number19
DOIs
StatePublished - Apr 5 2017

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