The information content of electron flow through adsorbed molecular monolayers

Paul A.J. Sherratt, Hagai Cohen, Tamar Seideman

Research output: Contribution to journalArticlepeer-review

Abstract

We point to the ability of noncontact measurements of electron transport via self-assembled monolayers to provide chemical, Å-resolved information about the underlying molecule. A conceptual framework is presented to model a current flow of soft electrons through a molecular monolayer to a substrate and explore the information content of this and other emerging noncontact measurements. A numerical scheme is developed where advantage is taken of the split-operator formalism to propagate the incident electronic wave function over a suitable periodic potential energy surface representing the self-assembled monolayer. The (experimentally observable) potential difference introduced by the transmitted electrons is extracted from the time-averaged electron density using the Poisson equation of classical electrostatics.

Original languageEnglish (US)
Article number234701
JournalJournal of Chemical Physics
Volume131
Issue number23
DOIs
StatePublished - 2009

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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