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arXiv · 1512.04229

Quantum oscillations and the Fermi-surface topology of the Weyl semimetal NbP

J. Klotz·Shu-Chun Wu·Chandra Shekhar·Yan Sun·Marcus Schmidt·Michael Nicklas·Michael Baenitz·M. Uhlarz·J. Wosnitza·Claudia Felser·Binghai Yan
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Abstract

The Weyl semimetal NbP was found to exhibit topological Fermi arcs and exotic magneto-transport properties. Here, we report on magnetic quantum-oscillation measurements on NbP and construct the 3D Fermi surface with the help of band-structure calculations. We reveal a pair of spin-orbit-split electron pockets at the Fermi energy and a similar pair of hole pockets, all of which are strongly anisotropic. The Fermi surface well explains the linear magnetoresistance observed in high magnetic fields by the quantum-limit scenario. The Weyl points that are located in the $k_z \approx π/c$ plane are found to exist 5 meV above the Fermi energy. Therefore, we predict that the chiral anomaly effect can be realized in NbP by electron doping to drive the Fermi energy to the Weyl points.

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J. Klotz, Shu-Chun Wu, Chandra Shekhar, Yan Sun, Marcus Schmidt, Michael Nicklas, Michael Baenitz, M. Uhlarz, J. Wosnitza, Claudia Felser, Binghai Yan. 2016-02-12. Quantum oscillations and the Fermi-surface topology of the Weyl semimetal NbP. https://doi.org/10.1103/physrevb.93.121105

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