Quantum oscillation and nontrivial transport in the Dirac semimetal Cd3As2 nanodevice
Here, we report on 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 T and preserves up to 100 K, revealing a sizeable Landau level gap and a device mobility of 2138 cm2 V 1 s 1. The angle variable oscillations indicate the isotropy of the bulk Dirac transport. The large estimated mean free path makes the Cd3As2 nanowire a promising platform for the one dimensional transport of Dirac semimetals.