DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2008 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 27: Bio- and Molecular Magnetism

MA 27.13: Vortrag

Donnerstag, 28. Februar 2008, 17:30–17:45, EB 202

Electronic and Magnetic Properties of Mn12 Single-Molecule Magnets on the Au(111) Surface — •Sönke Voss1, Michael Burgert1, Mikhail Fonin1, Christian Michaelis2, Ivan Brihuega2, Yury S. Dedkov3, Ulrich Groth1, Klaus Kern2, and Ulrich Rüdiger11Universität Konstanz, 78457 Konstanz — 2Max-Planck-Institut für Festkörperforschung, 70569 Stuttgart — 3Institut für Festkörperphysik, Technische Universität Dresden, 01062 Dresden

The paramount interest in single-molecule magnets (SMMs) like Mn12-acetate and its derivatives was inspired by numerous experimental and theoretical insights indicating the feasibility of addressing quantum effects of magnetism on a molecular scale. Due to its relatively high blocking temperature (∼3K) combined with the ability to identify well-defined spin states, Mn12 still remains the most favoured SMM possibly allowing the detection of magnetic fingerprints in transport properties of a single molecule.

In this work, the electronic properties of Mn12 molecules chemically grafted on Au(111) surfaces have been studied by means of low temperature as well as room temperature scanning tunneling microscopy and spectroscopy (STS), x-ray absorption spectroscopy and photoelectron spectroscopy. The results revealed signatures from most probably intact Mn12 molecules while STS measurements in magnetic fields indicate the possibility to identify magnetic fingerprints in scanning tunneling spectra. The results will be discussed with respect to previous attempts to perform transport measurements on Mn12 SMMs.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2008 > Berlin