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Updated: May 18, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
Conductance-driven change of the Kondo effect in a single cobalt atom
D-J Choi1, M V Rastei, P Simon
1Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS, 67034 Strasbourg, France.
Abstract:
A low-temperature scanning tunneling microscope is employed to build a junction comprising a Co atom bridging a copper-coated tip and a Cu(100) surface. An Abrikosov-Suhl-Kondo resonance is evidenced in the differential conductance and its width is shown to vary exponentially with the ballistic conductance for all tips employed. Using a theoretical description based on the Anderson model, we show that the Kondo effect and the total conductance are related through the atomic relaxations affecting the environment of the Co atom.
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