Fermi surface of the Weyl type-II metallic candidate WP<sub>2</sub>

ORAL

Abstract

Here, we present a study of the Fermi surface of WP2 via the Shubnikov-de Haas (SdH) effect. Compared to other semimetals, WP2 exhibits a very low residual resistivity, i.e., ρ0 = 10 nΩcm, which leads to perhaps the largest nonsaturating magnetoresistivity [ρ(H)] reported for any compound. For the samples displaying the smallest ρ0, ρ(H) is observed to increase by a factor of 2.5 × 107 % under μ0H = 35 T at T = 0.35 K. The angular dependence of the SdH frequencies is found to be in excellent agreement with the first-principles calculations when the electron and hole bands are shifted by 30 meV with respect to the Fermi level. This small discrepancy could have implications for the predicted topological character of this compound.

*This work was supported by DOE-BES through Award No. DE-SC0002613. The NHMFL is supported by NSF through NSF-DMR-1157490 and the State of Florida.

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Presenters

  • Rico Schoenemann

    • Natl. High Magnetic Field Lab, Florida State University
    • Natl High Magnetic Field Lab
    • National High Magnetic Field Laboratory

Authors

  • Rico Schoenemann

    • Natl. High Magnetic Field Lab, Florida State University
    • Natl High Magnetic Field Lab
    • National High Magnetic Field Laboratory

  • Niraj Aryal

    • Natl. High Magnetic Field Lab, Florida State University
    • Natl High Magnetic Field Lab
    • National High Magnetic Field Laboratory
    • Florida State Univ

  • Qiong Zhou

    • Natl. High Magnetic Field Lab, Florida State University
    • Natl High Magnetic Field Lab
    • Physics, Florida State University

  • Yu-Che Chiu

    • Natl. High Magnetic Field Lab, Florida State University
    • Natl High Magnetic Field Lab
    • National High Magnetic Field Laboratory
    • Physics, Florida State University

  • Kuan-Wen Chen

    • National High Magnetic Field Laboratory
    • Natl. High Magnetic Field Lab, Florida State University
    • Natl High Magnetic Field Lab

  • Thomas Martin

    • Department of Chemistry and Biochemistry, The University of Texas at Dallas
    • University of Texas at Dallas

  • Gregory McCandless

    • Department of Chemistry and Biochemistry, The University of Texas at Dallas
    • University of Texas at Dallas
    • Chemistry and Biochemistry, The University of Texas at Dallas

  • Julia Chan

    • Department of Chemistry and Biochemistry, The University of Texas at Dallas
    • University of Texas at Dallas
    • Chemistry and Biochemistry, The University of Texas at Dallas

  • Efstratios Manousakis

    • Natl. High Magnetic Field Lab, Florida State University
    • Natl High Magnetic Field Lab

  • Luis Balicas

    • Natl High Magnetic Field Lab
    • Nat. High Magn. Field Lab., Florida State University
    • FSU-NHMFL
    • National High Magnetic Field Lab
    • National High Magnetic Field Laboratory
    • Natl. High Magnetic Field Lab, Florida State University
    • High Field Magnet Lab
    • 1800 E. Paul Dirac Drive, National High Magnetic Field Laboratory, Natl High Magnetic Field Lab