Exotic Kondo effect from magnetic trimers.
Motivated by the recent experiments of Jamneala et al. [Phys. Rev. Lett. 87, 256804 (2001)] by combining 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 a 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.
Lazarovits
B
B
Center for Computational Materials Science, Vienna University of Technology, Austria.
Simon
P
P
Zaránd
G
G
Szunyogh
L
L