Angle-dependent magnetoresistance and quantum oscillations in high-mobility semimetal LuPtBi
Xi, X. K.
KAUST DepartmentMaterial Science and Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant NumberCRF-2015-2549-CRG4
Online Publication Date2017-04-05
Print Publication Date2017-05-17
Permanent link to this recordhttp://hdl.handle.net/10754/623069
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AbstractThe 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.
CitationXu G, Hou Z, Wang Y, Zhang X, Zhang H, et al. (2017) Angle-dependent magnetoresistance and quantum oscillations in high-mobility semimetal LuPtBi. Journal of Physics: Condensed Matter 29: 195501. Available: http://dx.doi.org/10.1088/1361-648x/aa6695.
SponsorsThis publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No: CRF-2015-2549-CRG4, National Natural Science Foundation of China (Grant Nos. 51571121 and 11604148), Jiangsu Natural Science Foundation for Distinguished Young Scholars (Grant No. BK20140035), Natural Science Foundation of Jiangsu Province (Grant No. BK20160829) and Qing Lan Project of Jiangsu Province. It is also funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.