Dresden 2011 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 19: Poster I (Bio- and Molecular Magnetism/ Magnetic Particles and Clusters/ Micro- and Nanostructured Magnetic Materials/ Magnetic Materials/ Multiferroics/ Magnetic Shape Memory Alloys/ Electron Theory of Magntism/ Spincaloric Transport/ Magnetic Coupling and Exchange Bias/ Magnetization Dynamics/ Micromagnetism and Computational Magnetics)

MA 19.88: Poster

Dienstag, 15. März 2011, 10:45–13:00, P2

The Jülich TRACX-PEEM at BESSY II: a state-of-the-art user-facility for time-resolved magnetism research. — •Florian Nickel, Ingo Krug, Alexander Kaiser, Daniel Gottlob, Stefan Cramm, and Claus M. Schneider — Forschungszentrum Jülich, Institut für Festkörperforschung IFF-9, and JARA-FIT, 52425 Jülich, Germany

Time-resolved X-PEEM is a well-established technique for magnetisation dynamic research. To exploit the capabilities of the latest instrument generation, we built up a state-of-the-art PEEM endstation at the soft x-ray Beamline UE56/1-SGM at BESSY in 2010. This microscope, being based on a design by R. Tromp and custom-built by SPECS GmbH, is the first commercially available device incorporating a tetrode mirror corrector. Key advantages of the aberration-correction are ultimate spatial resolution as well as dramatically improved transmission up to an order of magnitude in respect to uncorrected instruments. This makes the endstation ideally suited for signal-starved experiments such as time-resolved magnetization studies in a stroboscopic arrangement. Here we present the capabilities of our time-resolved, aberration-corrected x-PEEM (TRACX-PEEM) facility. We will present the performance of our gated MCP Detector in the BESSY hybrid-bunch filling-pattern showing that the isolated single-bunch can clearly be selected. This represents an important step for future pump-probe experiments.