%0 Journal Article
%A Bouaziz, Juba
%A Mendes Guimarães, Filipe Souza
%A Lounis, Samir
%T A new view on the origin of zero-bias anomalies of Co atoms atop noble metal surfaces
%J Nature Communications
%V 11
%N 1
%@ 2041-1723
%C [London]
%I Nature Publishing Group UK
%M FZJ-2020-04956
%P 6112
%D 2020
%X Many-body phenomena are paramount in physics. In condensed matter, their hallmark is considerable on a wide range of material characteristics spanning electronic, magnetic, thermodynamic and transport properties. They potentially imprint non-trivial signatures in spectroscopic measurements, such as those assigned to Kondo, excitonic and polaronic features, whose emergence depends on the involved degrees of freedom. Here, we address systematically zero-bias anomalies detected by scanning tunneling spectroscopy on Co atoms deposited on Cu, Ag and Au(111) substrates, which remarkably are almost identical to those obtained from first-principles. These features originate from gaped spin-excitations induced by a finite magnetic anisotropy energy, in contrast to the usual widespread interpretation relating them to Kondo resonances. Resting on relativistic time-dependent density functional and many-body perturbation theories, we furthermore unveil a new many-body feature, the spinaron, resulting from the interaction of electrons and spin-excitations localizing electronic states in a well defined energy.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 33257648
%U <Go to ISI:>//WOS:000617694900005
%R 10.1038/s41467-020-19746-1
%U https://juser.fz-juelich.de/record/888492