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Atomically resolved real-space imaging of hot electron dynamics

Author

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  • D. Lock

    (University of Bath)

  • K. R. Rusimova

    (University of Bath)

  • T. L. Pan

    (Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham)

  • R. E. Palmer

    (Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham)

  • P. A. Sloan

    (University of Bath)

Abstract

The dynamics of hot electrons are central to understanding the properties of many electronic devices. But their ultra-short lifetime, typically 100 fs or less, and correspondingly short transport length-scale in the nanometre range constrain real-space investigations. Here we report variable temperature and voltage measurements of the nonlocal manipulation of adsorbed molecules on the Si(111)-7 × 7 surface in the scanning tunnelling microscope. The range of the nonlocal effect increases with temperature and, at constant temperature, is invariant over a wide range of electron energies. The measurements probe, in real space, the underlying hot electron dynamics on the 10 nm scale and are well described by a two-dimensional diffusive model with a single decay channel, consistent with 2-photon photo-emission (2PPE) measurements of the real time dynamics.

Suggested Citation

  • D. Lock & K. R. Rusimova & T. L. Pan & R. E. Palmer & P. A. Sloan, 2015. "Atomically resolved real-space imaging of hot electron dynamics," Nature Communications, Nature, vol. 6(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9365
    DOI: 10.1038/ncomms9365
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