Topological nature of the node-arc semimetal PtSn4 probed by de Haas-van Alphen quantum oscillations. (16th March 2018)

• Record Type: Journal Article
• Authors: Wang, Y J; Liang, D D; Ge, M; Yang, J; Gong, J X; Luo, L; Pi, L; Zhu, W K; Zhang, C J; Zhang, Y H
• Is Part Of: Journal of physics. Volume 30:Number 15(2018)
• Publication Date: 2018-03-16
• Subjects: node arc semimetal -- de Haas-van Alphen -- topological nature; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aab254
• Languages: English
• ISSNs: 0953-8984

Abstract

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.