Controlling the Kondo Effect in CoCu_n Clusters Atom by Atom
arXiv:0810.0236 · doi:10.1103/PhysRevLett.101.266803
Abstract
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 non-monotonic 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.
4 pages, 4 figures
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