Magnetotransport of single crystalline NbAs. (22nd April 2015)

• Record Type: Journal Article
• Authors: Ghimire, N J; Luo, Yongkang; Neupane, M; Williams, D J; Bauer, E D; Ronning, F
• Is Part Of: Journal of physics. Volume 27:Number 15(2015)
• Page Start: 1057
• Publication Date: 2015-04-22
• Subjects: Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/0953-8984/27/15/152201
• Languages: English
• ISSNs: 0953-8984

Abstract

<abstract> <title>Abstract</title> <p>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 (<italic>H</italic> ∥ <italic>c</italic>, <italic>I</italic> ⊥ <italic>c</italic>) 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 × 10¹⁹ cm⁻³ and 3.5 × 10⁵ cm² Vs⁻¹, 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.</p> </abstract>