Charge state control of molecules reveals modification of the tunneling barrier with intramolecular contrast.

Swart, Ingmar; Sonnleitner, Tobias; Repp, Jascha · Nano Lett · 2011

basic_science · Level V

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Abstract

From scanning tunneling microscopy and spectroscopy experiments it is shown that control over the charge-state of individual molecules adsorbed on surfaces can be obtained by choosing a substrate system with an appropriate workfunction. The distribution of the additional charge is studied using difference images. These images show marked intramolecular contrast.

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