Phonon dephasing in Monolayer MoS$_{\mathrm{2}}$

ORAL

Abstract

Phonons are coordinated lattice vibrations, the study of which is important for understanding optical, electrical, and thermal properties of materials. Raman spectroscopy has been applied extensively to investigate phonon modes in atomically transition metal dichalcogenides such as monolayer MoS$_{\mathrm{2}}$. In this work, we demonstrate that the linewidth of the Stokes peak does not represent instrinsic phonon dephasing times. We report phonon dephasing times in monolayer and bulk MoS$_{\mathrm{2}}$ at both room temperature and low temperatures.

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Authors

  • Liuyang Sun

    • Department of Physics, University of Texas at Austin

  • Kha Tran

    • Department of Physics, University of Texas at Austin

  • Sebastian Roesch

    • Department of Physics, University of Tübingen

  • Eduardo Priego

    • Department of Physics, University of Texas at Austin

  • Galan Moody

    • National Institute of Standards and Technology

  • Junho Choi

    • Department of Physics, University of Texas at Austin

  • Yu-Ming Chang

    • Center for Condensed Matter Sciences, National Taiwan University

  • Kevin Silverman

    • National Institute of Standards and Technology

  • Richard Mirin

    • National Institute of Standards and Technology

  • Xiaoqin Li

    • Department of Physics, University of Texas at Austin