Raman spectroscopy studies of spin-lattice coupling in bilayer CrI3

ORAL

Abstract

CrI3 has been shown to be a layered antiferromagnet in its few-layer form. Upon the application of a moderate out-of-plane magnetic field, the layered antiferromagnetic state can be switched to a fully spin-polarized state. Among the few-layer CrI3 system, bilayer CrI3 is of particular interest because the coupling between its crystal structure and magnetic ordering can give rise to unique magneto-optical effects such as magnetic circular dichroism, nonreciprocal second harmonic generation, and deviation of Raman selection rules. In this talk, we will present Raman spectroscopic evidence of spin-lattice coupling in bilayer CrI3. We will show that spin-lattice coupling in bilayer CrI3 manifests itself in both first-order and higher-order Raman modes. The results of temperature and magnetic field dependence measurements will be discussed.

*Supported by NSF Career Grants No. DMR-1760668 and No. DMR-1749774.

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Presenters

  • Wencan Jin

    • Auburn University
    • University of Michigan
    • Univ of Michigan - Ann Arbor

Authors

  • Wencan Jin

    • Auburn University
    • University of Michigan
    • Univ of Michigan - Ann Arbor

  • Hyun Ho Kim

    • University of Waterloo, Canada
    • University of Waterloo

  • Zhipeng Ye

    • Department of Electrical and Computer Engineering, Texas Tech University
    • Texas Tech University
    • Texas Tech Univ

  • Gaihua Ye

    • Texas Tech University
    • Texas Tech Univ

  • Bowen Yang

    • University of Waterloo, Canada
    • University of Waterloo

  • Shangjie Tian

    • Renmin University of China

  • Hechang Lei

    • Brookhaven National Laboratory
    • Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices, Renmin University of China
    • Renmin University of China

  • Adam Tsen

    • University of Waterloo, Canada
    • University of Waterloo

  • Rui He

    • Department of Electrical and Computer Engineering, Texas Tech University
    • Texas Tech University
    • Texas Tech Univ

  • Liuyan Zhao

    • Department of Physics, University of Michigan
    • Univ of Michigan - Ann Arbor
    • University of Michigan
    • University of Michigan - Ann Arbor