Mobility induced unsaturated high linear magnetoresistance in transition-metal monopnictides Weyl semimetals

Abstract

Discovery of Weyl fermions in semimetallic tansition-metal monopnictides is a major breakthrough in condensed matter physics. A Weyl semimetal is characterized by the existence of robust Weyl points and unclosed topological surface states in the form of Fermi arc. All the four compounds of the Weyl semimetal transition monopnictide family i.e. NbP, TaP, NbAs and TaAs exhibit extremely high mobility and unsaturated high magnetoresistance (MR). For example, MR values are 8.5x10^5% at 1.85 K for NbP and 1.5x10^5% at 3 K in 9 T for TaAs. NbP also achieves very low value of residual resistivity 0.63 micro-ohm cm at 2 K due to suppression of scattering resulting in ultra-high mobility 5x10^6 cm^2/Vs, Interestingly, we find that the mobility of these compounds play an important role for such a large MR.

arXiv comment15 pages and 4 figures

References in corpus (4)

• The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi
• Giant intrinsic spin Hall effect in the TaAs family of Weyl semimetals
• Anomalous Hall effect in Weyl semimetal half Heusler compounds RPtBi (R = Gd and Nd)
• Visualizing "Fermi arcs" in the Weyl semimetal TaAs

Cited by in corpus (5)

• Anomalous Nernst effect and field-induced Lifshitz transition in Weyl semimetals TaP and TaAs
• Mesoscopic superconductivity and high spin polarization coexisting at metallic point contacts on the Weyl semimetal TaAs
• Linear magnetoresistance in a quasi-free two dimensional electron gas in an ultra-high mobility GaAs quantum well
• Pressure effect on the topologically nontrivial electronic state and transport of lutecium monobismuthide
• Magneto-optical response of the Weyl semimetal NbAs: Experimental results and hyperbolic-band computations