Open AccessManipulation of the two-site Kondo effect in linear CoCunCoCum clusters
Author(s) -
N. Néel,
Bin Shao,
Tim O. Wehling,
J. Kröger
Publication year - 2019
Publication title -
journal of physics condensed matter
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 228
eISSN - 1361-648X
pISSN - 0953-8984
DOI - 10.1088/1361-648x/ab4d17
Subject(s) - atom (system on chip) , kondo effect , cluster (spacecraft) , resonance (particle physics) , chain (unit) , atomic physics , linear molecular geometry , physics , enhanced data rates for gsm evolution , linear relationship , materials science , condensed matter physics , molecular physics , molecule , quantum mechanics , impurity , mathematics , telecommunications , statistics , computer science , programming language , embedded system
Artificially assembled linear atomic clusters, CoCu n CoCu m , are used to explore variations of the Kondo effect at the two Co sites. For all investigated Cu n chain lengths ( ) the addition of a single Cu atom to one edge Co atom of the chain ( ) strongly reduces the amplitude of the Abrikosov–Suhl–Kondo resonance of that Co atom. Concomitantly, the resonance line width is more than halved. On the contrary, the Kondo effect of the opposite edge Co atom remains unaffected. Hybridization together with the linear geometry of the cluster are likely to drive the effect.
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