%0 Journal Article
%A Raczkowski, Marcin
%A Assaad, Fakher F.
%T Emergent Coherent Lattice Behavior in Kondo Nanosystems
%J Physical review letters
%V 122
%N 9
%@ 1079-7114
%C College Park, Md.
%I APS
%M FZJ-2020-03852
%P 097203
%D 2019
%X How many magnetic moments periodically arranged on a metallic surface are needed to generate a coherent Kondo lattice behavior? We investigate this fundamental issue within the particle-hole symmetric Kondo lattice model using quantum Monte Carlo simulations. Extra magnetic atoms forming closed shells around the initial impurity induce a fast splitting of the Kondo resonance at the inner shells, which signals the formation of composite heavy-fermion bands. The onset of the hybridization gap matches well the enhancement of antiferromagnetic spin correlations in the plane perpendicular to the applied magnetic field, a genuine feature of the coherent Kondo lattice. In contrast, the outermost shell remains dominated by a local Kondo physics with spectral features resembling the single-impurity behavior.
%F PUB:(DE-HGF)16
%9 Journal Article
%R 10.1103/PhysRevLett.122.097203
%U https://juser.fz-juelich.de/record/885469