• DocumentCode
    3691629
  • Title

    Imaging ultrafast dynamics on the nanoscale with THz-STM

  • Author

    V. Jelic;T. L. Cocker;P. H. Nguyen;C. Rathje;G. J. Hornig;J. R. Hoffman;H. M. Sharum;R. Miller;S. J. Molesky;M. Gupta;J. A. J. Burgess;G. B. De los Reyes;L. V. Titova;C. Ropers;Y. Y. Tsui;M. R Freeman;F. A. Hegmann

  • Author_Institution
    Department of Physics, University of Alberta, Edmonton, AB, T6G 2E1 Canada
  • fYear
    2015
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    The ability to directly image ultrafast phenomena with nanometer spatial resolution is essential to our understanding of local excitation dynamics in nanomaterials and devices. We have developed a new approach to ultrafast scanning tunneling microscopy (STM) that couples terahertz (THz) pulses to the scanning tip of a STM. We have used THz-STM under ambient lab conditions to image ultrafast charging dynamics of a single InAs nanodot on GaAs with 0.5 ps time resolution and 2 nm spatial resolution. We are currently developing THz-STM for operation in ultrahigh vacuum with the goal of imaging ultrafast dynamics on surfaces with atomic resolution.
  • Keywords
    "Yttrium","Spatial resolution","Microscopy","Tunneling","Nanoscale devices"
  • Publisher
    ieee
  • Conference_Titel
    Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on
  • ISSN
    2162-2027
  • Electronic_ISBN
    2162-2035
  • Type

    conf

  • DOI
    10.1109/IRMMW-THz.2015.7327886
  • Filename
    7327886
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3691629