Zeeman splitting and dynamical mass generation in Dirac semimetal ZrTe5

Liu, Yanwen, Yuan, Xiang, Zhang, Cheng, Jin, Zhao, Narayan, Awadhesh, Luo, Chen, Chen, Zhigang, Yang, Lei, Zou, Jin, Wu, Xing, Sanvito, Stefano, Xia, Zhengcai, Li, Liang, Wang, Zhong and Xiu, Faxian (2016) Zeeman splitting and dynamical mass generation in Dirac semimetal ZrTe5. Nature Communications, 7 . doi:10.1038/ncomms12516


Author Liu, Yanwen
Yuan, Xiang
Zhang, Cheng
Jin, Zhao
Narayan, Awadhesh
Luo, Chen
Chen, Zhigang
Yang, Lei
Zou, Jin
Wu, Xing
Sanvito, Stefano
Xia, Zhengcai
Li, Liang
Wang, Zhong
Xiu, Faxian
Title Zeeman splitting and dynamical mass generation in Dirac semimetal ZrTe5
Formatted title
Zeeman splitting and dynamical mass generation in Dirac semimetal ZrTe5
Journal name Nature Communications   Check publisher's open access policy
ISSN 2041-1723
Publication date 2016-08-12
Sub-type Article (original research)
DOI 10.1038/ncomms12516
Open Access Status DOI
Volume 7
Total pages 9
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Collection year 2017
Language eng
Formatted 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.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
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Centre for Microscopy and Microanalysis Publications
 
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