Spatially Extended Kondo State in Magnetic Molecules Induced by Interfacial Charge Transfer

Authors :: Massachusetts Institute of Technology. Department of Materials Science and Engineering
Marzari, Nicola
Kulik, Heather Janine
Perera, U. G. E.
Iancu, V.
Dias da Silva, L. G. G. V.
Ulloa, S. E.
Hla, S. W.
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Marzari, Nicola
Kulik, Heather Janine
Perera, U. G. E.
Iancu, V.
Dias da Silva, L. G. G. V.
Ulloa, S. E.
Hla, S. W.
Source :: APS
Publication Year :: 2011
Abstract: An extensive redistribution of spin density in TBrPP-Co molecules adsorbed on a Cu(111) surface is investigated by monitoring Kondo resonances at different locations on single molecules. Remarkably, the width of the Kondo resonance is found to be much larger on the organic ligands than on the central cobalt atom—reflecting enhanced spin-electron interactions on molecular orbitals. This unusual effect is explained by means of first-principles and numerical renormalization-group calculations highlighting the possibility to engineer spin polarization by exploiting interfacial charge transfer. United States. Dept. of Energy (BES grant DE-FG02-02ER46012) National Science Foundation (U.S.) (NSF-PIRE-OISE 0730257) National Science Foundation (U.S.) (NSF-WMN 07010581) National Science Foundation (U.S.) (NSFDMR 0706020) United States. Army Research Office. Multidisciplinary University Research Initiative (MURI) (ARO-MURI DAAD-19-03-1-0169)

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