In this paper, we report the intercone transport of Weyl fermions in NbAs with external magnetic field in parallel to electric field, a quantum phenomenon known as the Adler-Bell-Jackiw anomaly. Surprisingly, the resulting negative magnetoresistance (MR) in NbAs shows significant difference from NbP. The observed low-field positive MR dip, which is missing in NbP at low temperatures, indicates that the spin-orbital coupling (SOC) is significantly stronger in NbAs than in the former. The results imply that the contribution of arsenic to SOC in TaAs and NbAs is not negligible.
@article{arxiv.1506.03190,
title = {Chiral anomaly induced negative magnetoresistance in topological Weyl semimetal NbAs},
author = {Xiaojun Yang and Yupeng Liu and Zhen Wang and Yi Zheng and Zhu-an Xu},
journal= {arXiv preprint arXiv:1506.03190},
year = {2015}
}
Comments
4 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:1506.02283