Locally Resolved Electronic Properties of the Commensurate Charge Density Wave Phase of 1T-TaS2

ORAL

Abstract

Among the metallic TMDCs, 1T-TaS2 has a rich phase diagram due to an intriguing interplay of electron-electron / electron-phonon interactions and dimensionality. We use scanning tunnelling microscopy and spectroscopy at low temperatures to investigate local variations in the electronic properties of the commensurate charge density wave (CCDW) phase. In this talk, we discuss high-resolution tunnelling spectra that show remarkably distinct electronic states among the Ta atoms comprising the Star-of-David configuration. We reveal electronic states that are localized at the position of the CDW maxima and discuss their consequences.

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Presenters

  • Adina Luican-Mayer

    Physics, University of Ottawa, University of Ottawa

Authors

  • Adina Luican-Mayer

    Physics, University of Ottawa, University of Ottawa

  • Yuan Zhang

    Argonne National Laboratory, Center for Nanoscale Materials, Argonne National Laboratory

  • Andrew DiLullo

    Argonne National Laboratory

  • Yang Li

    Argonne National Laboratory

  • Saw Hla

    Argonne National Laboratory, Physics & Astronomy, Ohio University, Argonne National Lab, Center for Nanoscale Materials, Argonne National Laboratory