Ab initio study of a mechanically gated molecule: From weak to strong correlation
arXiv:1009.2020 · doi:10.1103/PhysRevB.84.125413
Abstract
The electronic spectrum of a chemically contacted molecule in the junction of a scanning tunneling microscope can be modified by tip retraction. We analyze this effect by a combination of density functional, many-body perturbation and numerical renormalization group theory, taking into account both the non-locality and the dynamics of electronic correlation. Our findings, in particular the evolution from a broad quasiparticle resonance below to a narrow Kondo resonance at the Fermi energy, correspond to the experimental observations.
4 pages, 3 figures
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