We report transport measurement in zero and applied magnetic field on a single crystal of NbAs. Transverse and longitudinal magnetoresistance in the plane of this tetragonal structure does not saturate up to 9 T. In the transverse configuration (H∥c, I⊥c) it is 230,000 \% at 2 K. The Hall coefficient changes sign from hole-like at room temperature to electron-like below ∼ 150 K. The electron carrier density and mobility calculated at 2 K based on a single band approximation are 1.8 x 1019 cm−3 and 3.5 x 105 cm2/Vs, respectively. These values are similar to reported values for TaAs and NbP, and further emphasize that this class of noncentrosymmetric, transition-metal monopnictides is a promising family to explore the properties of Weyl semimetals and the consequences of their novel electronic structure.
@article{arxiv.1503.07571,
title = {Magnetotransport of single crystalline NbAs},
author = {N. J. Ghimire and Yongkang Luo and M. Neupane and D. J. Williams and E. D. Bauer and F. Ronning},
journal= {arXiv preprint arXiv:1503.07571},
year = {2015}
}