74807 20200117221648.0 doi 10.1103/PhysRevB.97.235442 sideral 107123 ART-2018-107123 eng (orcid)0000-0003-4180-0752 Moro-Lagares, M. Quantifying the leading role of the surface state in the Kondo effect of Co/Ag(111) 2018 Access copy available to the general public Unrestricted 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. info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 1.502 2018 Electronic, Optical and Magnetic Materials 2018 Q1 Condensed Matter Physics 2018 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Fernandez, J. Roura-Bas, P. (orcid)0000-0003-0681-8260 Ibarra, M.R. Universidad de Zaragoza Aligia, A.A. (orcid)0000-0002-3260-9641 Serrate, D. Universidad de Zaragoza 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 97, 23 (2018), 235442 [9 pp] Phys. Rev. B Physical Review B 2469-9950 836514 http://zaguan.unizar.es/record/74807/files/texto_completo.pdf Versión publicada 27372 http://zaguan.unizar.es/record/74807/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:74807 articulos driver 2020-01-17-22:07:26 ARTICLE