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Phys Rev Lett. 2012 Jun 29;108(26):266803. Epub 2012 Jun 26.

Conductance-driven change of the Kondo effect in a single cobalt atom.

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1
Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS, 67034 Strasbourg, France.

Erratum in

  • Phys Rev Lett. 2012 Oct 12;109(15):159901.

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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