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Controlling the Kondo effect in CoCu(n) clusters atom by atom

Controlling the Kondo effect in CoCu(n) clusters atom by atom

Physical Review Letters 101(26): 266803

Clusters containing a single magnetic impurity were investigated by scanning tunneling microscopy, spectroscopy, and ab initio electronic structure calculations. The Kondo temperature of a Co atom embedded in Cu clusters on Cu(111) exhibits a nonmonotonic variation with the cluster size. Calculations model the experimental observations and demonstrate the importance of the local and anisotropic electronic structure for correlation effects in small clusters.

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Accession: 052336787

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PMID: 19437660

DOI: 10.1103/physrevlett.101.266803

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