Exotic Kondo effect from magnetic trimers

Details Exotic Kondo effect from magnetic trimers Exotic Kondo effect from magnetic trimers

2004-07-15

arxiv.org/abs/cond-mat/0407399v2

Phys. Rev. Lett. 95, 077202 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.95.077202

Motivated by the recent experiments of Jamneala {\em et al.} [T. Jamnaela {\em et al.}, Phys. Rev. Lett. {\bf 87}, 256804 (2001)], by combining {\em ab-initio} and renormalization group methods, we study the strongly correlated state of a Cr trimer deposited on gold. Internal orbital fluctuations of the trimer lead to huge increase of $T_K$ compared to the single ion Kondo temperature explaining the experimental observation of a zero-bias anomaly for the trimers. The strongly correlated state seems to belong to a new, yet hardly explored class of non--Fermi liquid fixed points.

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