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arXiv · 1602.03051

Quantum oscillation and nontrivial transport in the Dirac Semimetal Cd3As2 nanodevice

Haiyang Pan·Kang Zhang·Zhongxia Wei·Bo Zhao·Jue Wang·Ming Gao·Li Pi·Min Han·Fengqi Song·Xuefeng Wang·Baigeng Wang·Rong Zhang
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Abstract

Here we demonstrate the Shubnikov de Haas oscillation in high-quality Cd3As2 nanowires grown by a chemical vapor deposition approach. The dominant transport of topological Dirac fermions is evident by the nontrivial Berry phase in the Landau Fan diagram. The quantum oscillations rise at a small field of 2 Tesla and preserves till up to 100K, revealing a sizeable Landau level gap and a mobility of over 2000 cm2/V-1s-1. The angle-variable oscillations indicates the isotropy of the bulk Dirac transport. The large estimated mean free path appeals the one-dimensional transport of Dirac semimetals.

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Haiyang Pan, Kang Zhang, Zhongxia Wei, Bo Zhao, Jue Wang, Ming Gao, Li Pi, Min Han, Fengqi Song, Xuefeng Wang, Baigeng Wang, Rong Zhang. 2016-02-09. Quantum oscillation and nontrivial transport in the Dirac Semimetal Cd3As2 nanodevice. https://doi.org/10.1063/1.4948654

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