An Investigation of Magnetic Alloys of PtTe<sub>2</sub> and PdTe<sub>2</sub> using Angle Resolved Photoemission Spectroscopy (ARPES)

ORAL

Abstract

With the emergence of two-dimensional materials with long-range magnetic ordering such as CrI3 and Cr2Ge2Te6, interest has grown towards new air-stable two-dimensional ferromagnets. Here we present an investigation into the valence band structure of 2 families of transition metal dichalcogenides, CrxPt1-xTe2 and CrxPd1-xTe2 grown by the Goldberger group at Ohio State University, using Angle Resolved Photoemission Spectroscopy (ARPES). PdTe2 and PtTe2 are reported as type-II Dirac Semimetals1,2 and with chromium substitution, these materials have the potential to preserve some of their topological properties, while remaining air-stable, and possibly ferromagnetic to the monolayer. We perform an ARPES study that utilizes different light polarizations and energies of synchrotron light.

*ARPES measurements were supported by the US Department of Energy under award number DE-SC0018154 ARPES measurements were supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under award number DE-SC0018154Derek Bergner and Ivan Pelayo were supported by the Cal. State. Long Beach and Ohio State University Partnership for Education and Research in Hard and Soft Materials, a National Science Foundation PREM, under Grant No. 2122199.

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Publication: [1] Yan, M., et al. Lorentz-violating type-II Dirac fermions in transition metal dichalcogenide PtTe2 . Nat Comm 8, 257 (2017). https://doi.org/10.1038/s41467-017-00280-6
[2] Noh, H.-J., et al. (2017). Experimental Realization of Type-II Dirac Fermions in a PdTe2 Superconductor. Phys. Rev. Lett., 119, 016401. doi:10.1103/PhysRevLett.119.016401

Presenters

  • Derek C Bergner

    • California State University, Long Beach

Authors

  • Derek C Bergner

    • California State University, Long Beach

  • Ivan Pelayo

    • California State University, Long Beach
    • Physics and Astronomy, California State University Long Beach

  • Warren L Huey

    • The Ohio State University
    • Department of Chemistry and Biochemistry, Ohio State University
    • Department of Chemistry University of Ohio
    • The Ohio State Univ.
    • Ohio State University

  • Archibald . Williams

    • The Ohio State University
    • Department of Chemistry and Biochemistry, Ohio State University
    • Department of Chemistry University of Ohio
    • The Ohio State Univ.
    • Ohio State University

  • Ziling Deng

    • The Ohio State University
    • University of Ohio

  • Luca Moreschini

    • Lawrence Berkeley National Laboratory

  • Jonathan D Denlinger

    • Lawrence Berkeley National Laboratory
    • Lawrence Berkeley National Laboratory, Berkeley, California

  • Alessandra Lanzara

    • University of California, Berkeley

  • Wolfgang E Windl

    • Ohio State Univ - Columbus

  • Joshua E Goldberger

    • The Ohio State University
    • Department of Chemistry, University of Ohio

  • Claudia Ojeda-Aristizabal

    • California State University, Long Beach