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

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

Physical Review Letters 108(26): 266803

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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Accession: 052288707

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PMID: 23005003

DOI: 10.1103/physrevlett.108.266803

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