Quantum oscillation and nontrivial transport in the Dirac semimetal Cd3As2 nanodevice
Quantum oscillation and nontrivial transport in the Dirac semimetal Cd3As2 nanodevice
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狄拉克半金属 Cd3As2 纳米器件中的量子振荡和非平凡输运
DOI:
10.1063/1.4948654
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发表时间:
2016-02
影响因子:
4
通讯作者:
Zhang, Rong
中科院分区:
文献类型:
--
作者:
Song, Fengqi;Wang, Xuefeng;Wang, Baigeng;Zhang, Rong
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.
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