Kondo Effect and Surface-State Electrons

Details Kondo Effect and Surface-State Electrons Kondo Effect and Surface-State Electrons

2003-12-17

arxiv.org/abs/cond-mat/0312434v1

Physics

Condensed Matter

4 pages, 4 figures, ACSIN-7 proceedings

Scientific paper

10.1016/j.apsusc.2004.07.023

We have used low temperature scanning tunneling spectroscopy and atomic manipulation to study the role of surface-state electrons in the Kondo effect of an isolated cobalt atom adsorbed on Ag(111). We show that the observed Kondo signature remains unchanged in close proximity of a monoatomic step, where the local density of states of the surface-state electrons is strongly perturbed. This result indicates a minor role for surface-state electrons in the Kondo effect of cobalt, compared to bulk electrons. A possible explanation for our findings is presented.

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