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arXiv · 1707.00942

Magnetotransport properties of the new-type topological semimetal ZrTe

W. L. Zhu·J. B. He·S. Zhang·D. Chen·L. Shan·Z. A. Ren·G. F. Chen
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Abstract

We report the first experimental results of the magnetoresistance, Hall effect, and quantum Shubnikov-de Haas oscillations on single crystals of ZrTe, which was recently predicted to be a new type of topological semimetal hosting both triply degenerate crossing points and Weyl fermion state. The analysis of Hall effect and quantum oscillations indicate that ZrTe is a multiband system with low carrier density, high carrier mobility, small cross-sectional area of Fermi surface, and light cyclotron effective mass, as observed in many topological semimetals. Meanwhile, the angular dependence of the magnetoresistance and the quantum-oscillation frequencies further suggest that ZrTe possesses a three-dimensional Fermi surface that is rather complex. Our results provide a new platform to realize exotic quantum phenomena related to the new three-component fermions distinct from Dirac and Weyl fermions.

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W. L. Zhu, J. B. He, S. Zhang, D. Chen, L. Shan, Z. A. Ren, G. F. Chen. 2017-07-04. Magnetotransport properties of the new-type topological semimetal ZrTe. https://doi.org/10.1103/physrevb.101.245127

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