TY  - JOUR
AU  - Bouaziz, Juba
AU  - Mendes Guimarães, Filipe Souza
AU  - Lounis, Samir
TI  - A new view on the origin of zero-bias anomalies of Co atoms atop noble metal surfaces
JO  - Nature Communications
VL  - 11
IS  - 1
SN  - 2041-1723
CY  - [London]
PB  - Nature Publishing Group UK
M1  - FZJ-2020-04956
SP  - 6112
PY  - 2020
AB  - 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.
LB  - PUB:(DE-HGF)16
C6  - 33257648
UR  - <Go to ISI:>//WOS:000617694900005
DO  - DOI:10.1038/s41467-020-19746-1
UR  - https://juser.fz-juelich.de/record/888492
ER  -