Locally Resolved Electronic Properties of the Commensurate Charge Density Wave Phase of 1T-TaS<sub>2</sub>

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.

*This work was performed at Center for Nanoscale Materials, a U.S. Department of Energy Office of Science User Facility, supported by U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357.

–

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