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arXiv · 1503.07571

Magnetotransport of single crystalline NbAs

N. J. Ghimire·Yongkang Luo·M. Neupane·D. J. Williams·E. D. Bauer·F. Ronning
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Abstract

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 ($H \parallel c$, $I \perp c$) it is 230,000 \% at 2 K. The Hall coefficient changes sign from hole-like at room temperature to electron-like below $\sim$ 150 K. The electron carrier density and mobility calculated at 2 K based on a single band approximation are 1.8 x 10$^{19}$ cm$^{-3}$ and 3.5 x 10$^{5}$ cm$^2$/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.

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N. J. Ghimire, Yongkang Luo, M. Neupane, D. J. Williams, E. D. Bauer, F. Ronning. 2015-03-25. Magnetotransport of single crystalline NbAs. https://doi.org/10.1088/0953-8984/27/15/152201

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