Physics

The discovery of dynamic chiral anomaly in a Weyl semimetal NbAs

X. Yuan, C. Zhang, et al.

This groundbreaking research by Xiang Yuan, Cheng Zhang, Yi Zhang, and others reveals the dynamic chiral anomaly in the Weyl semimetal NbAs. By harnessing the interplay between phonons and magnetic fields, the study uncovers unique phonon activities, offering profound insights into Weyl fermion dynamics in applied electromagnetic fields.

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Abstract

This paper reports the experimental observation of dynamic chiral anomaly in the Weyl semimetal NbAs. By combining the internal deformation potential of coupled phonons with an applied static magnetic field, the researchers accessed the dynamic regime, generating a dynamic E⋅B field. This produced anomalous phonon activity with a characteristic angle dependence, providing an effective approach to study Weyl fermion behavior in the AC regime and enabling the coupling between Weyl fermions and electromagnetic waves.

Publisher

Nature Communications

Published On

Mar 06, 2020

Authors

Xiang Yuan, Cheng Zhang, Yi Zhang, Zhongbo Yan, Tairu Lyu, Mengyao Zhang, Zhilin Li, Chaoyu Song, Minhao Zhao, Pengliang Leng, Mykhaylo Ozerov, Xiaolong Chen, Nanlin Wang, Yi Shi, Hugen Yan, Faxian Xiu

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