Ab initio simulations of scanning-tunneling-microscope images with embedding techniques and application to C58-dimers on Au(111)

  • Author:

    J. Wilhelm, M. Walz, M. Stendel, A. Bagrets, and F. Evers

  • Source:

    Phys. Chem. Chem. Phys. 15 (18), 6684 (2013)

  • Date: 2013
  • We present a modification of the standard electron transport methodology based on the (non-equilibrium) Green's function formalism to efficiently simulate STM-images. The novel feature of this method is that it employs an effective embedding technique that allows us to extrapolate properties of metal substrates with adsorbed molecules from quantum-chemical cluster calculations. To illustrate the potential of this approach, we present an application to STM-images of C58-dimers immobilized on Au(111)-surfaces that is motivated by recent experiments.