Regensburg 2013 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 41: Spintronics / Quantum Information: Materials and Methods (jointly with HL)

TT 41.10: Vortrag

Mittwoch, 13. März 2013, 17:30–17:45, H2

Single Molecule Magnets meet Graphene — •Christian Cervetti¹, Andrea Cornia⁴, Eberhard Ulrich Stützel², Stephan Rauschenbach², Fernando Luis⁵, Martin Dressel¹, Marko Burghard², Klaus Kern^2,3, and Lapo Bogani¹ — ¹1. Physikalisches Institut, Universität Stuttgart — ²Max Planck Institut für Festkörperforschung — ³Institute de Physique de la Matière Condensée, Ecole Polytechnique de Lausanne, Switzerland — ⁴Dipartimento di Chimica, Università di Modena e Reggio Emilia, Italy — ⁵Instituto de Ciencia de Materiales de Aragón, Spain

Graphene has a strong potential as component of novel spintronics devices. Besides its use as conducting channel for coherent spin transport, graphene is furthermore of interest for the detection and manipulation of the spin within molecule magnets. This task requires an appropriate coupling between the sheets and the single molecular magnets. Here, we describe the assembly of a functionalized Fe4 cluster compound on graphene exploiting non-covalent π-stacking interaction. We demonstrate the control over the organization of the molecules by tuning the deposition parameters and the type of graphene. The graphene phononic environment is found to influence the magnetization dynamics of the molecular magnets as evidenced by μ-SQUID study at mK-temperatures. Finally, preliminary spin-transport experiments at low-temperature are presented.