TY  - JOUR
AU  - Prüser, Henning
AU  - Dargel, Piet E.
AU  - Bouhassoune, Mohammed
AU  - Ulbrich, Rainer G.
AU  - Pruschke, Thomas
AU  - Lounis, Samir
AU  - Wenderoth, Martin
TI  - Interplay between the Kondo effect and the Ruderman–Kittel–Kasuya–Yosida interaction
JO  - Nature Communications
VL  - 5
SN  - 2041-1723
CY  - London
PB  - Nature Publishing Group
M1  - FZJ-2015-02928
SP  - 5417
PY  - 2014
AB  - The interplay between the Ruderman–Kittel–Kasuya–Yosida interaction and the Kondo effect is expected to provide the driving force for the emergence of many phenomena in strongly correlated electron materials. Two magnetic impurities in a metal are the smallest possible system containing all these ingredients and define a bottom-up approach towards a long-term understanding of concentrated/dense systems. Here we report on the experimental and theoretical investigation of iron dimers buried below a ​Cu(100) surface by means of low-temperature scanning tunnelling spectroscopy combined with density functional theory and numerical renormalization group calculations. The Kondo effect, in particular the width of the Abrikosov–Suhl resonance, is strongly altered or even suppressed due to magnetic coupling between the impurities. It oscillates as a function of dimer separation revealing that it is related to indirect exchange interactions mediated by the conduction electrons.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000345624800038
C6  - pmid:25384417
DO  - DOI:10.1038/ncomms6417
UR  - https://juser.fz-juelich.de/record/189960
ER  -