Berlin 2018 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 1: Focus: Molecularly Functionalized Low-Dimensional Systems I - organized by Antonio Setaro, Carola Meyer, Aravind Vijayaraghvan and Matteo Mannini
CPP 1.7: Vortrag
Montag, 12. März 2018, 11:45–12:00, C 130
Surface magnetism of self-assembled metallofullerenes on metals — Denis Krylov1, Chia-Hsiang Chen1, Fupin Liu1, Lukas Spree1, Stanislav Avdoshenko1, Sebastian Schimmel1, Rasmus Westerström2, Jan Dreiser3, Christian Heß1, and •Alexey Popov1 — 1Leibniz Institute for Solid State and Materials Research, Dresden. Germany — 2Synchrotron Radiation Research Lund University, Sweden — 3Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland
Molecules with bistable magnetic ground state and slow relaxation of magnetization are known as single molecule magnets (SMMs). Information storage or spintronic applications envisaged for SMMs require contacting the molecules to conducting electrodes. Therefore, magnetic properties of SMMs on such surfaces should be well understood. However, whereas hundreds of transition metal and lanthanide based SMMs have been (and are being) reported, the studies of surface magnetism in monolayers of SMMs are very scarce, and hysteresis of magnetization on conducting substrates has been observed so far only for TbPc2, Fe4, and Dy2ScN@C80.
Endohedral metallofullerenes DyScN@C80 and Dy2ScN@C80 are robust SMMs combining structural stability with relatively high blocking temperature of magnetization, which allows their sublimation or chemical modification without decomposition of the magnetic core. In this work we use Scanning Tunneling Microscopy and X-ray magnetic circular dischroism to study structural and magnetic properties of submonolayers of metallofullerenes assembled on metallic substrates.