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De Haas–van Alphen study on three-dimensional topological semimetal pyrite PtBi2

Authors :
Wei Ning
Ping Zhang
Wenshuai Gao
Fawei Zheng
Hong-wei Zhang
Guolin Zheng
Shujing Li
Xiangde Zhu
Mingliang Tian
Jin Hu
Min Wu
Ning Hao
Source :
Science Bulletin. 64:1496-1501
Publication Year :
2019
Publisher :
Elsevier BV, 2019.

Abstract

We present the systematic de Haas–van Alphen (dHvA) quantum oscillations studies on the recently discovered topological Dirac semimetal pyrite PtBi2 single crystals. Remarkable dHvA oscillations are emerged at a low field about 1.5 T. From the analyses of the dHvA oscillations, we extract the high quantum mobilities, light effective masses and phase shift factors for the Dirac fermions in pyrite PtBi2. From the angular dependence of the dHvA oscillations, we map out the topology of the Fermi surface. Furthermore, we identify two additional oscillation frequencies that are not probed by the SdH oscillations, which provides us with opportunities to further understand its Fermi surface topology.

Details

ISSN :
20959273
Volume :
64
Database :
OpenAIRE
Journal :
Science Bulletin
Accession number :
edsair.doi...........06c9ed417d8af53d0a092048706478ea
Full Text :
https://doi.org/10.1016/j.scib.2019.08.005