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Dresden 2011 – scientific programme

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MA: Fachverband Magnetismus

MA 63: Poster II (Surface Magnetism/ Magnetic Imaging/ Topological Insulators/ Spin Structures and Magnetic Phase Transitions/ Graphene/ Magnetic Thin Films/ Magnetic Semiconductors/ Magnetic Half-metals and Oxides/ Spin-dependent Transport/ Spin Excitations and Spin Torque/ Spin Injection and Spin Currents in Heterostructures/ Spintronics/ Magnetic Storage and Applications)

MA 63.13: Poster

Friday, March 18, 2011, 11:00–14:00, P2

A Scanning X-ray Microscope for Time-resolved and Surface-sensitive Measurements — •Markus Weigand1, Daniela Nolle1, Bartel van Waeyenberge2, Michael Bechtel1, and Eberhard Goering11MPI für Metallforschung, Stuttgart — 2Ghent University, Belgium

MAXYMUS, an new UHV Scanning Transmission X-ray Microscope (STXM), has recently finished commissioning and became open for external users at HZB/Bessy II, Berlin, placed at a newly commissioned helical undulator Beamline. Activities up to now focused on magnetic measurements using XMCD as a contrast mechanism.

Key features of the microscope design are alternate acquisition methods: A fast APD detector with a custom FPGA system allows time resolved measurements with time resolutions below 50 ps and up to 100 time channels. Total electron yield, on the other hand, allows surface sensitive imaging on both transparent and bulk samples using the full range of soft x-ray spectroscopic methods. This is facilitated by a fully UHV compatible, bakeable microscope design with hot-pluggable sample transfer and UHV preparation chamber.

We will present and overview of current and near future capabilities as well as fist users and commissioning results with a focus of the above mentioned areas.

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