Dynamical image-charge effect in molecular tunnel junctions: Beyond energy level alignment

  title={Dynamical image-charge effect in molecular tunnel junctions: Beyond energy level alignment},
  author={Chengjun Jin and Kristian Sommer Thygesen},
  journal={Physical Review B},
When an electron tunnels between two metal contacts it temporarily induces an image charge (IC) in the electrodes which acts back on the tunneling electron. It is usually assumed that the IC forms instantaneously such that a static model for the image potential applies. Here we investigate how the finite IC formation time affects charge transport through a molecule suspended between two electrodes. For a single-level model, an analytical treatment shows that the conductance is suppressed by a… 

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