Shubnikov-de Haas oscillations, weak antilocalization effect and large linear magnetoresistance in the putative topological superconductor LuPdBi

Scientific Reports
Orest PavlosiukPiotr Wiśniewski

Abstract

We present electronic transport and magnetic properties of single crystals of semimetallic half-Heusler phase LuPdBi, having theoretically predicted band inversion requisite for nontrivial topological properties. The compound exhibits superconductivity below a critical temperature Tc = 1.8 K, with a zero-temperature upper critical field Bc2 ≈ 2.3 T. Although superconducting state is clearly reflected in the electrical resistivity and magnetic susceptibility data, no corresponding anomaly can be seen in the specific heat. Temperature dependence of the electrical resistivity suggests existence of two parallel conduction channels: metallic and semiconducting, with the latter making negligible contribution at low temperatures. The magnetoresistance is huge and clearly shows a weak antilocalization effect in small magnetic fields. Above about 1.5 T, the magnetoresistance becomes linear and does not saturate in fields up to 9 T. The linear magnetoresistance is observed up to room temperature. Below 10 K, it is accompanied by Shubnikov-de Haas oscillations. Their analysis reveals charge carriers with effective mass of 0.06 me and a Berry phase very close to π, expected for Dirac-fermion surface states, thus corroborating topological n...Continue Reading

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Citations

Mar 2, 2016·Proceedings of the National Academy of Sciences of the United States of America·Yonghui ZhouHo-Kwang Mao
Mar 17, 2016·Scientific Reports·Xiaoming ZhangXi-Xiang Zhang
Jan 6, 2016·Scientific Reports·Orest PavlosiukPiotr Wiśniewski
Feb 9, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Biplab BhattacharyyaSudhir Husale
May 3, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·J HuangH Xiao
Jul 20, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·J C SouzaP G Pagliuso
Jun 19, 2015·Journal of Physics. Condensed Matter : an Institute of Physics Journal·A M NikitinA de Visser
Jun 6, 2020·Nanotechnology·Vishal BhardwajRatnamala Chatterjee
Mar 27, 2021·The Journal of Physical Chemistry Letters·Wenting ZhangTian Cui
Apr 8, 2021·Scientific Reports·Vishal BhardwajRatnamala Chatterjee
Jul 29, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·A MukhopadhyayN Mohapatra
Sep 19, 2018·Nano Letters·Li ZhuShao-Chun Li

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Methods Mentioned

BETA
electron-electron scattering
X-ray

Software Mentioned

FULLPROF
97
SHELXL
Quantum PPMS

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