Scalable growth of high mobility dirac semimetal Cd3As2 microbelts

Chen, Zhi Gang and Zhang, Cheng and Zou, Yichao and Zhang, Enze and Yang, Lei and Hong, Min and Xiu, Faxian and Zou, Jin (2015) Scalable growth of high mobility dirac semimetal Cd3As2 microbelts. Nano Letters, 15 (9). pp. 5830-5834. ISSN 1530-6984

Abstract

Three-dimensional (3D) Dirac semimetals are 3D analogues of graphene, which display Dirac points with linear dispersion in k-space, stabilized by crystal symmetry. Cd3As2 has been predicted to be 3D Dirac semimetals and was subsequently demonstrated by angle-resolved photoemission spectroscopy. As unveiled by transport measurements, several exotic phases, such as Weyl semimetals, topological insulators, and topological superconductors, can be deduced by breaking time reversal or inversion symmetry. Here, we reported a facile and scalable chemical vapor deposition method to fabricate high-quality Dirac semimetal Cd3As2 microbelts; they have shown ultrahigh mobility up to 1.15 × 105 cm2 V−1 s−1 and pronounced Shubnikov–de Haas oscillations. Such extraordinary features are attributed to the suppression of electron backscattering. This research opens a new avenue for the scalable fabrication of Cd3As2 materials toward exciting electronic applications of 3D Dirac semimetals.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 21 Jun 2017 04:33
Last Modified: 21 Jun 2017 04:33
Uncontrolled Keywords: Cd3As2; Dirac semimetals; Microbelts; Weyl Fermions; Angle resolved photoemission spectroscopy; Chemical vapor deposition methods; Electron backscattering; Electronic application; Shubnikov de-Haas oscillation; Threedimensional (3-d); Topological insulators; Electromagnetic Waves;
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1021/acs.nanolett.5b01885
URI: http://eprints.usq.edu.au/id/eprint/31678

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