Berlin 2018 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 5: Organic-inorganic hybrid systems and organic films I

O 5.2: Vortrag

Montag, 12. März 2018, 11:00–11:15, MA 042

Momentum resolved electronic structure of the endo-fullerene Sc3N@C80 on Ag(111) — •Christina Schott1, Norman Haag1, Johannes Seidel1, Leah L. Kelly1, Mirko Cinchetti2, Benjamin Stadtmüller1, and Martin Aeschlimann11Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany — 2Experimentelle Physik VI, Technische Universität Dortmund, 44221 Dortmund, Germany

Single molecular magnets (SMM) are highly promising materials to reduce the lateral dimensions of magnetic data storage units to the molecular limit. Here, we aim to disentangle the electronic coupling of the organic and the spin carrying part of SMMs and metallic surfaces. As model system, we have chosen the endo-fullerenes Sc3N@C80 for which the atomic spin centers are encased by a robust carbon cage. For a bulk-like film of Sc3N@C80 on Ag(111), we combine momentum resolved photoemission and photoemission tomography to assign the emission features of the molecular orbitals to characteristic parts of the SMM, i.e., to the carbon cage or the atomic spin centers. Spectroscopic differences between the bulk-like film and a Sc3N@C80 monolayer film on Ag(111) can hence be directly linked to the electronic coupling of these molecular parts and the surface. Our results will provide novel insight into the coupling mechanism of spin centers of SMM with (ferromagnetic) metal surfaces and how it influences the properties of spin centers.

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