Kondo effect by controlled cleavage of a single molecule contact
Abstract
Conductance measurements of a molecular wire, contacted between an epitaxial molecule-metal bond and the tip of a scanning tunneling microscope, are reported. Controlled retraction of the tip gradually de-hybridizes the molecule from the metal substrate. This tunes the wire into the Kondo regime in which the renormalized molecular transport orbital serves as spin impurity at half filling and the Kondo resonance opens up an additional transport channel. Numerical renormalization group simulations suggest this type of behavior to be generic for a common class of metal molecule bonds. The results demonstrate a new approach to single-molecule experiments with atomic-scale contact control and prepare the way for the ab initio simulation of many-body transport through single-molecule junctions.
Keywords
Cite
@article{arxiv.cond-mat/0612036,
title = {Kondo effect by controlled cleavage of a single molecule contact},
author = {R. Temirov and A. C. Lassise and F. Anders and F. S. Tautz},
journal= {arXiv preprint arXiv:cond-mat/0612036},
year = {2024}
}
Comments
Main text: 41 pages including references and captions, 9 figures. Supplementary information: 5 pages including 2 figures New experimental and theoretical data supporting initial claims are added. The paper has been reworked from the letter format into a longer version