Quantum transport through STM-lifted single PTCDA molecules
Mesoscale and Nanoscale Physics
2024-01-30 v1 Materials Science
Abstract
Using a scanning tunneling microscope we have measured the quantum conductance through a PTCDA molecule for different configurations of the tip-molecule-surface junction. A peculiar conductance resonance arises at the Fermi level for certain tip to surface distances. We have relaxed the molecular junction coordinates and calculated transport by means of the Landauer/Keldysh approach. The zero bias transmission calculated for fixed tip positions in lateral dimensions but different tip substrate distances show a clear shift and sharpening of the molecular chemisorption level on increasing the STM-surface distance, in agreement with experiment.
Cite
@article{arxiv.0808.2600,
title = {Quantum transport through STM-lifted single PTCDA molecules},
author = {Florian Pump and Ruslan Temirov and Olga Neucheva and Serguei Soubatch and Stefan Tautz and Michael Rohlfing and Gianaurelio Cuniberti},
journal= {arXiv preprint arXiv:0808.2600},
year = {2024}
}
Comments
accepted for publication in Applied Physics A