Topological nature of the node-arc semimetal PtSn4 probed by de Haas-van Alphen quantum oscillations

Journal of Physics. Condensed Matter : an Institute of Physics Journal
Y J WangY H Zhang

Abstract

Dirac node arc semimetal state is a new topological quantum state which is proposed to exist in PtSn4 (Wu et al 2016 Dirac node arcs in PtSn4 Nat. Phys. 12 667-71). We present a systematic de Haas-van Alphen quantum oscillation study on this compound. Two intriguing oscillation branches, i.e. F 1 and F 2, are detected in the fast Fourier transformation spectra, both of which are characterized to possess tiny effective mass and ultrahigh quantum mobility. And the F 2 branch exhibits an angle-dependent nontrivial Berry phase. The features are consistent with the existence of the node arc semimetal state and shed new light on its complicated Fermi surfaces and topological nature.

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Citations

Nov 19, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Rui Niu, W K Zhu

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