Zeeman splitting and dynamical mass generation in Dirac semimetal ZrTe5
Article
Article Title | Zeeman splitting and dynamical mass generation in Dirac semimetal ZrTe5 |
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ERA Journal ID | 122966 |
Article Category | Article |
Authors | Liu, Yanwen (Author), Yuan, Xiang (Author), Zhang, Cheng (Author), Jin, Zhao (Author), Narayan, Awadhesh (Author), Luo, Chen (Author), Chen, Zhigang (Author), Yang, Lei (Author), Zou, Jin (Author), Wu, Xing (Author), Sanvito, Stefano (Author), Xia, Zhengcai (Author), Li, Liang (Author), Wang, Zhong (Author) and Xiu, Faxian (Author) |
Journal Title | Nature Communications |
Journal Citation | 7 (12516), pp. 1-9 |
Number of Pages | 9 |
Year | 2016 |
Publisher | Nature Publishing Group |
Place of Publication | United Kingdom |
ISSN | 2041-1723 |
Digital Object Identifier (DOI) | https://doi.org/10.1038/ncomms12516 |
Web Address (URL) | http://www.nature.com/articles/ncomms12516.pdf |
Abstract | Dirac semimetals have attracted extensive attentions in recent years. It has been theoretically suggested that many-body interactions may drive exotic phase transitions, spontaneously generating a Dirac mass for the nominally massless Dirac electrons. So far, signature of interaction-driven transition has been lacking. In this work, we report high-magnetic-field transport measurements of the Dirac semimetal candidate ZrTe5. Owing to the large g factor in ZrTe5, the Zeeman splitting can be observed at magnetic field as low as 3 T. Most prominently, high pulsed magnetic field up to 60 T drives the system into the ultra-quantum limit, where we observe abrupt changes in the magnetoresistance, indicating field-induced phase transitions. This is interpreted as an interaction-induced spontaneous mass generation of the Dirac fermions, which bears resemblance to the dynamical mass generation of nucleons in high-energy physics. Our work establishes Dirac semimetals as ideal platforms for investigating emerging correlation effects in topological matters. |
Keywords | correlation; magnetic field; phase transition; physical property; physics; quantum mechanics; bear; fermion; magnetic field; nucleon; phase transition; physics |
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 | |
Trinity College, Ireland | |
East China Normal University, China | |
University of Queensland | |
Tsinghua University, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4148/zeeman-splitting-and-dynamical-mass-generation-in-dirac-semimetal-zrte5
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