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O: Fachverband Oberflächenphysik
O 98: Electronic structure: Surface magnetism and spin phenomena I
O 98.4: Talk
Thursday, March 15, 2018, 15:45–16:00, MA 042
Probing surface magnetism with a nickelocene tip — •Benjamin Verlhac1, Nicolas Bachellier1, Léo Garnier1, Maider Ormaza1, Paula Abufager2, Nicolás Lorente3, Markus Ternes4, Marie-Laure Bocquet5, and Laurent Limot1 — 1Université de Strasbourg, CNRS, IPCMS, Strasbourg, France — 2Instituto de Física de Rosario-CONICET-Universidad Nacional de Rosario,Rosario, Argentina — 3Donostia International Physics Center (DIPC), San Sebastián, Spain — 4Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany — 5ENS-CNRS-UPMC, Paris, France
Inelastic electron tunneling spectroscopy (IETS) within the junction of a scanning tunneling microscope (STM) uses current-driven spin excitations for an all electrical characterization of the spin state of a single object. Here we study the magnetism of a sandwich nickelocene molecule (Nc) adsorbed on Cu(100) by means of X-ray magnetic circular dichroism (XMCD) and density functional theory calculations (DFT), and show with IETS that it exhibits efficient spin excitations. The molecule preserves its magnetic moment and magnetic anisotropy not only on Cu(100), but also in different metallic environments including the tip apex. Taking advantage of this robusteness, we use a functionalized Nc tip to detect the magnetism of a single Fe adatom.