Landau level splitting in Cd3As2 under high magnetic fields
Article
Article Title | Landau level splitting in Cd3As2 under high magnetic fields |
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ERA Journal ID | 122966 |
Article Category | Article |
Authors | Cao, Junzhi (Author), Liang, Sihang (Author), Zhang, Cheng (Author), Liu, Yanwen (Author), Huang, Junwei (Author), Jin, Zhao (Author), Chen, Zhi-Gang (Author), Wang, Zhijun (Author), Wang, Qisi (Author), Zhao, Jun (Author), Li, Shiyan (Author), Dai, Xi (Author), Zou, Jin (Author), Xia, Zhengcai (Author), Li, Liang (Author) and Xiu, Faxian (Author) |
Journal Title | Nature Communications |
Journal Citation | 6 |
Number of Pages | 6 |
Year | 2015 |
Publisher | Nature Publishing Group |
Place of Publication | United Kingdom |
ISSN | 2041-1723 |
Digital Object Identifier (DOI) | https://doi.org/10.1038/ncomms8779 |
Web Address (URL) | http://www.nature.com/articles/ncomms8779 |
Abstract | Three-dimensional topological Dirac semimetals (TDSs) are a new kind of Dirac materials that exhibit linear energy dispersion in the bulk and can be viewed as three-dimensional graphene. It has been proposed that TDSs can be driven to other exotic phases like Weyl semimetals, topological insulators and topological superconductors by breaking certain symmetries. Here we report the first transport experiment on Landau level splitting in TDS Cd3As2 single crystals under high magnetic fields, suggesting the removal of spin degeneracy by breaking time reversal symmetry. The detected Berry phase develops an evident angular dependence and possesses a crossover from non-Trivial to trivial state under high magnetic fields, a strong hint for a fierce competition between the orbit-coupled field strength and the field-generated mass term. Our results unveil the important role of symmetry breaking in TDSs and further demonstrate a feasible path to generate a Weyl semimetal phase by breaking time reversal symmetry. |
ANZSRC Field of Research 2020 | 340399. Macromolecular and materials chemistry not elsewhere classified |
Byline Affiliations | Fudan University, China |
Huazhong University of Science and Technology, China | |
University of Queensland | |
Chinese Academy of Sciences, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4164/landau-level-splitting-in-cd3as2-under-high-magnetic-fields
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