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Sergelius P, Gooth J, Bäßler S, et al. Berry phase and band structure analysis of the Weyl semimetal NbP. Sci Rep. 2016;6:33859doi: 10.1038/srep33859.
Sergelius, P., Gooth, J., Bäßler, S., Zierold, R., Wiegand, C., Niemann, A., Reith, H., Shekhar, C., Felser, C., Yan, B., & Nielsch, K. (2016). Berry phase and band structure analysis of the Weyl semimetal NbP. Scientific reports, 633859. https://doi.org/10.1038/srep33859
Sergelius, Philip, et al. "Berry phase and band structure analysis of the Weyl semimetal NbP." Scientific reports vol. 6 (2016): 33859. doi: https://doi.org/10.1038/srep33859
Sergelius P, Gooth J, Bäßler S, Zierold R, Wiegand C, Niemann A, Reith H, Shekhar C, Felser C, Yan B, Nielsch K. Berry phase and band structure analysis of the Weyl semimetal NbP. Sci Rep. 2016 Sep 26;6:33859. doi: 10.1038/srep33859. PMID: 27667203; PMCID: PMC5036179.
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Sci Rep. 2016 Sep 26;6:33859. doi: 10.1038/srep33859.

Berry phase and band structure analysis of the Weyl semimetal NbP.

Scientific reports

Philip Sergelius, Johannes Gooth, Svenja Bäßler, Robert Zierold, Christoph Wiegand, Anna Niemann, Heiko Reith, Chandra Shekhar, Claudia Felser, Binghai Yan, Kornelius Nielsch

Affiliations

  1. Institute of Nanostructure and Solid-State Physics, University of Hamburg, 20355 Hamburg, Germany.
  2. IBM Research GmbH, 8803 Rueschlikon, Switzerland.
  3. Leibniz Institute for Solid State and Materials Research (IFW) Dresden, 01171 Dresden, Germany.
  4. Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany.
  5. Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany.

PMID: 27667203 PMCID: PMC5036179 DOI: 10.1038/srep33859

Abstract

Weyl semimetals are often considered the 3D-analogon of graphene or topological insulators. The evaluation of quantum oscillations in these systems remains challenging because there are often multiple conduction bands. We observe de Haas-van Alphen oscillations with several frequencies in a single crystal of the Weyl semimetal niobium phosphide. For each fundamental crystal axis, we can fit the raw data to a superposition of sinusoidal functions, which enables us to calculate the characteristic parameters of all individual bulk conduction bands using Fourier transform with an analysis of the temperature and magnetic field-dependent oscillation amplitude decay. Our experimental results indicate that the band structure consists of Dirac bands with low cyclotron mass, a non-trivial Berry phase and parabolic bands with a higher effective mass and trivial Berry phase.

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