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Quantum oscillation and nontrivial transport in the Dirac Semimetal Cd3As2 nanodevice

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arxiv 1602.03051 v1 pith:IHGKLWUP submitted 2016-02-09 cond-mat.mes-hall

Haiyang Pan , Kang Zhang , Zhongxia Wei , Bo Zhao , Jue Wang , Ming Gao , Li Pi , Min Han
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Fengqi Song Xuefeng Wang Baigeng Wang Rong Zhang
This is my paper · ORCID
classification cond-mat.mes-hall
keywords diractransportcd3as2landaunontrivialoscillationoscillationsquantum
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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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