Fermi surface of the type-II Dirac semimetallic candidates PdTe<sub>2</sub> and PtTe<sub>2</sub>.

ORAL

Abstract

We investigated the electronic structures at the Fermi level and the transport properties via the Shubnikov-de Haas (SdH) and de Haas van Alphen (dHvA) effects in single-crystals of PdTe2 and PtTe2, recently claimed to be candidates for a novel type-II Dirac semimetallic state. We synthesized high-quality single-crystals, i.e. with mobilities in excess of 104 cm2/Vs, through a flux method. Both compounds display similar band structures and concomitantly complex their fermi surfaces which are not in perfect agreement with band structure calculations. The effective masses extracted from the Lifshitz-Kosevich formalism were found to be in the order of 0.01 times the free electron mass for both compounds. We also found evidence for a non-trivial Berry phase for PdTe2 compound.

*This work is supported by DOE-BES through award DE-SC0002613

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Presenters

  • Wenkai Zheng

    • Natl High Magnetic Field Lab

Authors

  • Wenkai Zheng

    • Natl High Magnetic Field Lab

  • Qiong Zhou

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

  • Niraj Aryal

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

  • 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

  • Rico Schoenemann

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

  • Kuan-Wen Chen

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

  • Daniel Rhodes

    • Columbia Univ
    • Physics, Columbia Univ
    • Columbia University
    • Mechanical Engineering, Columbia University

  • 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