Topological semimetal state and field-induced Fermi surface reconstruction in the antiferromagnetic monopnictide NdSb

We report the experimental realization of a Dirac semimetal state in NdSb, a material with antiferromagnetic ground state. The occurrence of a topological semimetal state has been well supported by our band structure calculations and the experimental observation of chiral-anomaly-induced negative ma...

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Bibliographic Details
Published in:Physical review. B 2018-03, Vol.97 (11), Article 115133
Main Authors: Wang, Yongjian, Yu, J. H., Wang, Y. Q., Xi, C. Y., Ling, L. S., Zhang, S. L., Wang, J. R., Xiong, Y. M., Han, Tao, Han, Hui, Yang, Jun, Gong, Jixiang, Luo, Lei, Tong, W., Zhang, Lei, Qu, Zhe, Han, Y. Y., Zhu, W. K., Pi, Li, Wan, X. G., Zhang, Changjin, Zhang, Yuheng
Format: Article
Language:English
Subjects:
Antiferromagnetism
Fermi surfaces
Magnetic materials
Magnetoresistance
Magnetoresistivity
Polarization (spin alignment)
Reconstruction
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Summary:We report the experimental realization of a Dirac semimetal state in NdSb, a material with antiferromagnetic ground state. The occurrence of a topological semimetal state has been well supported by our band structure calculations and the experimental observation of chiral-anomaly-induced negative magnetoresistance. A field-induced Fermi surface reconstruction is observed in response to the change of spin polarization. The observation of a topological semimetal state in a magnetic material provides an opportunity to investigate the magnetotopological phenomena.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.97.115133