Berlin 2018 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 21: Poster I
MA 21.93: Poster
Dienstag, 13. März 2018, 09:30–13:00, Poster A
Improving X-ray Magnetic Microscopy at MAXYMUS — •Markus Weigand1, Iullia Bykova1, Michael Bechtel1, Bartel VanWaeyenberge2, Hermann Stoll1, and Gisela Schütz1 — 1MPI for Intelligent Systems, Stuttgart, Germany — 2Gent University, Gent, Belgium
MAXYMUS is a UHV Scanning Transmission X-ray Microscope (STXM) operated by the MPI for Intelligent Systems at a dedicated soft X-ray undulator beamline at Bessy II, which is a world leading instrument for time resolved magnetic microscopy.
It allows users to pump samples with a wide range of excitation types and frequencies and directly image the response of the sample with our self-build single photon detection and counting system, yielding resolutions of down to 20ps and 20nm in time and space. This capability can combined with a vector field system and UHV capability for concurrent surface and bulk measurements.
We will present a number of upgrades being made to the microscope to enhance the capabilities, including a helium cryostat and compatible high frequency sample holders for dynamic imaging <30K, improvements for higher excitation bandwidths above 30GHz as well as a high repetition rate synchronized laser being developed in cooperation with the Max-Born-Institute to allow optical pumping, both for thermal excitation as well as triggering of Austin switches for very fast dynamic imaging.