Magneto-Raman study of the Neel-type Antiferromagnet MnPSe<sub>3</sub>

ORAL

Abstract

The discovery of 2D magnetism in van der Waals materials such as CrI3 and Cr2Ge2Te6 demonstrated that long range magnetic ordering can survive in the monolayer limit, given that the material has sufficiently large anisotropy. MnPSe3 is a layered material with Neel-type antiferromagnetic spins lying parallel to the basal plane. We perform a systematic magneto-Raman study of MnPSe3. Multiple excitation laser wavelengths were used. With resonant Raman condition, we study the temperature and magnetic field dependence of the Raman spectrum of single crystal MnPSe3. A drastic shift in the phonon spectrum across TNeel is observed. We compare the spin-phonon coupling between bulk and thin samples.

*The work at the National Institute of Standards and Technology was supported by National Research Council Postdoctoral Research Associateship Program and NIST-STRS (Scientific and Technical Research Services) for funding. Work at OSU was supported by the Center for Emergent Materials, an NSF MRSEC under grant DMR-1420451. This was also supported in part by The Ohio State University Institute for Materials Research. X-ray diffraction was performed at the Center for Electron Microscopy and Analysis (CEMAS) at The Ohio State University.

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Presenters

  • Thuc Mai

    • NIST
    • National Institute of Standards and Technology

Authors

  • Thuc Mai

    • NIST
    • National Institute of Standards and Technology

  • Joshua Argo

    • Materials Science and Engineering, The Ohio State University

  • Amber McCreary

    • National Institute of Standards and Technology
    • NIST

  • Rolando Valdes Aguilar

    • Ohio State Univ - Columbus
    • Ohio State Univ
    • Physics, The Ohio State University
    • Ohio State University
    • Department of Physics, The Ohio State University

  • Vicky Doan-Nguyen

    • Materials Science and Engineering, The Ohio State University
    • Ohio State University

  • Angela Hight Walker

    • National Institute of Standards and Technology
    • NIST
    • National Institute of Standards and Technology (NIST)