Magnetotransport Properties of Cd3As2 Nanostructures

Zhang, Ennze, Liu, Yanwen, Wang, Weiyi, Zhang, Cheng, Zhou, Peng, Chen, Zhi-Gang, Zou, Jin and Xiu, Faxian (2015) Magnetotransport Properties of Cd3As2 Nanostructures. ACS Nano, 9 9: 8843-8850. doi:10.1021/acsnano.5b02243


Author Zhang, Ennze
Liu, Yanwen
Wang, Weiyi
Zhang, Cheng
Zhou, Peng
Chen, Zhi-Gang
Zou, Jin
Xiu, Faxian
Title Magnetotransport Properties of Cd3As2 Nanostructures
Formatted title
Magnetotransport Properties of Cd3As2 Nanostructures
Journal name ACS Nano   Check publisher's open access policy
ISSN 1936-0851
1936-086X
Publication date 2015-09-22
Year available 2015
Sub-type Article (original research)
DOI 10.1021/acsnano.5b02243
Open Access Status Not Open Access
Volume 9
Issue 9
Start page 8843
End page 8850
Total pages 8
Place of publication Washington, DC United States
Publisher American Chemical Society
Collection year 2016
Language eng
Formatted abstract
Three-dimensional (3D) topological Dirac semimetal has a linear energy dispersion in 3D momentum space, and it can be viewed as an analogue of graphene. Extensive efforts have been devoted to the understanding of bulk materials, but yet it remains a challenge to explore the intriguing physics in low-dimensional Dirac semimetals. Here, we report on the synthesis of Cd3As2 nanowires and nanobelts and a systematic investigation of their magnetotransport properties. Temperature-dependent ambipolar behavior is evidently demonstrated, suggesting the presence of finite-size of bandgap in nanowires. Cd3As2 nanobelts, however, exhibit metallic characteristics with a high carrier mobility exceeding 32 000 cm2 V–1 s–1 and pronounced anomalous double-period Shubnikov-de Haas (SdH) oscillations. Unlike the bulk counterpart, the Cd3As2 nanobelts reveal the possibility of unusual change of the Fermi sphere owing to the suppression of the dimensionality. More importantly, their SdH oscillations can be effectively tuned by the gate voltage. The successful synthesis of Cd3As2 nanostructures and their rich physics open up exciting nanoelectronic applications of 3D Dirac semimetals.
Keyword Ambipolar effect
Gate tunability
Nanobelt
Nanowire
Shubnikov de Haas oscillations
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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