Data for paper: Initiating and imaging the coherent surface dynamics of charge carriers in real space

Dataset

Description

The tip of a scanning tunnelling microscope is an atomic-scale source of electrons and holes. As the injected charge spreads out it can induce adsorbed molecules to react. By comparing large-scale `before' and `after' images of an adsorbate covered surface, the spatial extent of the nonlocal manipulation is revealed. Here we measure the nonlocal manipulation of toluene molecules on the Si(111)-7x7 surface at room temperature. Both the range and probability of nonlocal manipulation have a voltage dependence. A region within 5 to 15 nm of the injection site shows a marked reduction in manipulation. We propose that this region marks the extent of the initial coherent (i.e., ballistic) time-dependent evolution of the injected charge carrier. Using scanning tunnelling spectroscopy, we develop a model of this time-dependent expansion of the initially localized hole wavepacket within a particular surface state and deduce a quantum coherence (ballistic) lifetime of about 10 fs.
Date made available27 Jul 2016
PublisherUniversity of Bath
Temporal coverage1 Jan 2012 - 1 Jan 2016
Date of data production20 Sep 2014 - 1 Sep 2015

Research Output

Initiating and imaging the coherent surface dynamics of charge carriers in real space

Rusimova, K., Bannister, N., Harrison, P., Lock, D., Crampin, S., Palmer, R. E. & Sloan, P., 28 Sep 2016, In : Nature Communications. 7, p. 1-7 7 p., 12839.

Research output: Contribution to journalArticle

Open Access
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  • 14 Citations (Scopus)
    148 Downloads (Pure)

    Atomically resolved real-space imaging of hot electron dynamics

    Lock, D., Rusimova, K., Pan, T., Palmer, R. E. & Sloan, P., 21 Sep 2015, In : Nature Communications. 6, 8365, p. 1-7 7 p., 8365.

    Research output: Contribution to journalArticle

    Open Access
  • 27 Citations (Scopus)
    65 Downloads (Pure)
    Open Access
    File
  • 15 Citations (Scopus)
    123 Downloads (Pure)

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  • Cite this

    Sloan, P. (Creator), Rusimova, K. (Creator), Bannister, N. (Creator), Harrison, P. (Creator), Crampin, S. (Creator), Palmer, R. E. (Creator), Lock, D. (Creator) (27 Jul 2016). Data for paper: Initiating and imaging the coherent surface dynamics of charge carriers in real space. University of Bath. 10.15125/BATH-00230