Quantifying the leading role of the surface state in the Kondo effect of Co/Ag(111)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73591357" target="_blank" >RIV/61989592:15310/18:73591357 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.97.235442" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.97.235442</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.97.235442" target="_blank" >10.1103/PhysRevB.97.235442</a>
Alternative languages
Result language
angličtina
Original language name
Quantifying the leading role of the surface state in the Kondo effect of Co/Ag(111)
Original language description
Using a combination of scanning tunneling spectroscopy and atomic lateral manipulation, we obtained a systematic variation of the Kondo temperature T-K of Co atoms on Ag(111) as a function of the surface-state contribution to the total density of states at the atom adsorption site rho(s) . By sampling the T-K of a Co atom on positions where rho(s) was spatially resolved beforehand, we obtain a nearly linear relationship between the magnitudes. We interpret the data on the basis of an Anderson model including orbital and spin degrees of freedom [SU(4)] in good agreement with the experimental findings. The fact that the onset of the surface band is near the Fermi level is crucial to finding the observed linear behavior. In light of this model, the quantitative analysis of the experimental data evidences that at least a quarter of the coupling of Co impurities with extended states takes place through the hybridization to surface states. This result is of fundamental relevance in the understanding of Kondo screening of magnetic impurities on noble-metal surfaces, where bulk and surface electronic states coexist.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
—
Continuities
N - Vyzkumna aktivita podporovana z neverejnych zdroju
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PHYSICAL REVIEW B
ISSN
2469-9950
e-ISSN
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Volume of the periodical
97
Issue of the periodical within the volume
23
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
"235442-1"-"235442-9"
UT code for WoS article
000436553500002
EID of the result in the Scopus database
2-s2.0-85049211021