In-operando Magneto-Raman spectroscopy of 2D materials: graphene and 2M-WS<sub>2</sub>

ORAL

Abstract

We highlight the measurement capabilities of our custom-built magneto-Raman spectrometer with simultaneous electrical measurement, focusing on two different devices. The first is a gated graphene hall bar. We obtain Raman spectra of graphene as a function of gate voltage and applied magnetic field at 1.6 K, in the quantum Hall regime. The second device is made from a novel 2D material, 2M-WS2, with exotic topological superconducting phase below 8 K. We study the effect of superconductivity on Raman active phonons, by varying the temperature and magnetic field.

*The work at University of Wyoming is funded by Department of Energy, Office of Basic Energy Sciences, award number DE-SC0021281

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Presenters

  • Angela R Hight Walker

    • National Institute of Standards and Tech
    • National Institute of Standards and Technology

Authors

  • Son T Le

    • The Laboratory for Physical Sciences

  • Tehseen Adel

    • National Institute of Standards and Technology

  • Maria F Munoz

    • National Institute of Standards and Technologies

  • Piumi I Samarawickrama

    • University of Wyoming

  • Joseph McBride

    • Department of Chemistry, University of Wyoming
    • University of Wyoming

  • John Ackerman

    • Department of Chemical Engineering, University of Wyoming & Resonance Sciences, Beaver Creek Oh
    • Department of Chemical Engineering, University of Wyoming
    • University of Wyoming, Department of Chemical Engineering
    • University of Wyoming

  • Brian Leonard

    • Department of Chemistry, University of Wyoming
    • University of Wyoming

  • Jifa Tian

    • University of Wyoming

  • Angela R Hight Walker

    • National Institute of Standards and Tech
    • National Institute of Standards and Technology