Vibrational Properties of van der Waals Materials

ORAL

Abstract

Single sheet van der Waals materials have become increasingly important over the last decade because of their broad range of applications in areas such as catalysis, energy storage, and microelectronics. These single/few layer constructs have been thoroughly analyzed by Raman spectroscopy but all infrared spectroscopy to date has been unsuccessful due to the inability to overcome the diffraction limit. The investigation of characteristic ungerade infrared modes is, however, crucially important in understanding material functionality. Synchrotron infrared nanospectroscopy, a fusion of near-field optical microscopy with high brightness infrared synchrotron radiation, has overcome this fight for photons and enabled a better understanding of size-induced effects, including quantum confinement and symmetry breaking which lead to distinctive chemical, electronic, optical, and thermal properties that are quite different from the single crystal. This approach will be illustrated with the complex magnetic semiconductor, MnPS3.

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Presenters

  • Sabine Neal

    Department of Chemistry, University of Tennessee

Authors

  • Sabine Neal

    Department of Chemistry, University of Tennessee

  • Heung Sik Kim

    Rutgers University, New Brunswick, Department of Physics and Astronomy, Rutgers University

  • Amanda Haglund

    Department of Materials Science and Engineering, University of Tennessee

  • Kevin Smith

    Department of Chemistry, University of Tennessee

  • Michael Crocker Martin

    Lawrence Berkeley National Laboratory

  • Hans Bechtel

    Advanced Light Source Division, Lawrence Berkeley National Laboratory, Lawrence Berkeley National Laboratory

  • G Lawrence Carr

    Brookhaven National Laboratory

  • David Vanderbilt

    Rutgers University, New Brunswick, Department of Physics and Astronomy, Rutgers University, Department of Physics and Astronomy, Rutgers University, Piscataway, NJ-08854, USA, Physics and Astronomy, Rutgers University, New Brunswick, Department of Physics and Astronomy, Rutgers University, New Jersey, Rutgers University, USA, Rutgers Univ, Physics and Astronomy, Rutgers University, Piscataway, NJ, United States, Department of Physics and Astronomy, Rutgers University, Piscataway, NJ, USA

  • Kristjan Haule

    Rutgers University, New Brunswick, Physics and Astronomy, Rutgers University, Department of Physics and Astronomy, Rutgers University, Department of Physics, Rutgers University, Physics and Astronomy, Rutgers University, Piscataway, NJ, United States

  • David George Mandrus

    Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA, University of Tennessee-Knoxville, Oak Ridge National Lab, Department of Materials Science and Engineering, University of Tennessee, University of Tennessee (Knoxville, USA), Department of Materials Science and Engineering, University of Tennessee Knoxville, Department of Material Science & Engineering, University of Tennessee, Material Science and Engineering, University of Tennessee, Materials Science and Technology, Materials Science and Technology, University of Tennessee, Knoxville, Department of Materials Science and Engineering, The University of Tennessee, Materials Science and Engineering, The University of Tennessee, Oak Ridge National Laboratory, Department of Material Science and Engineering, University of Tennessee

  • Janice Lynn Musfeldt

    Univ of Tennessee, Knoxville, Department of Physics and Astronomy, Department of Chemistry, University of Tennessee, University of Tennessee