Conductance-Driven Kondo Effect in a Single Cobalt Atom

Details Conductance-Driven Kondo Effect in a Single Cobalt Atom Conductance-Driven Kondo Effect in a Single Cobalt Atom

2011-12-13

arxiv.org/abs/1112.2858v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures

Scientific paper

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 regardless of the tip structure. Using a theoretical description based on the Anderson model, we show that the Kondo effect and the conductance are related through the atomic relaxations affecting the environment of the Co atom.

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