Approaching the type 2 Dirac point in Co-doped PdTe<sub>2</sub>

ORAL

Abstract

Topological states of quantum matter have been investigated intensively in recent few years. A combination of superconductivity and topological order is considered to be a potential platform for realizing Majorana fermions. PdTe2 was classified as a type 2 Dirac semimetal where the Dirac points are located 0.5 eV below the Fermi level. Furthermore, PdTe2 is a superconductor with Tc below 2K. In order to preserve the Dirac points and lower the Fermi level we substituted up to 50% of Pd with Co. While the magnetoresistance is strongly reduced compared to the pure Pd compound, our Co doped samples still show superconductivity with a Tc of 0.22 K at a Co concentration of 50%. So far however, all evidences still point towards PdCoTe2 being a conventional superconductor.

*This work was supported by DOE-BES through Award No. DE-SC0002613. The National High Magnetic Field Laboratory is supported by the National Science Foundation through NSF/DMR-1644779 and the State of Florida.

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Presenters

  • Wenkai Zheng

    • National High Magnetic Field Laboratory FSU
    • National High Magnetic Field Laboratory

Authors

  • Wenkai Zheng

    • National High Magnetic Field Laboratory FSU
    • National High Magnetic Field Laboratory

  • Rico Schoenemann

    • National High Magnetic Field Laboratory

  • Gregory T. McCandless

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

  • Greta Chappell

    • Florida State University
    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory and Florida State University

  • Shirin Mozaffari

    • National High Magnetic Field Laboratory
    • National High Magnetic Field Lab, Florida State University, Tallahassee, USA

  • Yu-Che Chiu

    • National High Magnetic Field Laboratory
    • Florida State University

  • Julia Y. Chan

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

  • Ryan Baumbach

    • National High Magnetic Field Laboratory, Florida State University
    • Florida State University
    • NHMFL-FSU
    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory and Florida State University
    • National High Magnetic Field Laboratory - Florida State University
    • NHMFL

  • Luis Balicas

    • National High Magnetic Field Laboratory, Tallahassee, FL-32310, USA.
    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory FSU
    • National High Magnetic Field Lab, Florida State University, Tallahassee, USA
    • NHMFL