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Conference Paper

Imaging ultrafast dynamics on the nanoscale with THz-STM

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Burgess,  Jacob A. J.
Department of Physics, University of Alberta, Edmonton, AB, T6G 2E1 Canada;
Dynamics of Nanoelectronic Systems, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

External Resource

http://dx.doi.org/10.1109/IRMMW-THz.2015.7327886
(Publisher version)

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Citation

Jelic, V., Cocker, T. L., Nguyen, P. H., Rathje, C., Hornig, G. J., Hoffman, J. R., et al. (2015). Imaging ultrafast dynamics on the nanoscale with THz-STM. In 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz 2015). IEEE. doi:10.1109/IRMMW-THz.2015.7327886.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002A-D6D0-7
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.