Dresden 2014 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 55: Poster II
MA 55.32: Poster
Freitag, 4. April 2014, 10:30–13:30, P2
Ultrafast magnetic and structural dynamics in antiferromagnetic Europium-Telluride — •Christoph Trabant1,2,3,6, Niko Pontius1, Karsten Holldack1, Enrico Schierle1, Eugen Weschke1, Torsten Kachel1, Rolf Mitzner1, Martin Beye1, Gunther Springholz4, Georgi Dakovski5, Joshua J Turner5, Stefan Möller5, Tianhan Wang5, Alex Gray5, Markus Hantschmann5,1, Hermann Dürr5, Michael Minitti5, W.S. Lee5, Yi-De Chuang5, Zuman Hussain5, Z.X. Shen5, Matias Bargheer3, Daniel Schick3, Alexander Föhlisch1,3, and Christian Schüßler-Langeheine1 — 1Helmholtz-Zentrum Berlin — 2II. Physikalisches Institut, Universität zu Köln — 3Institut für Physik und Astronomie, Universität Potsdam — 4Institute of Semiconductor and Solid State Physics, Johannes Kepler Universität Linz, Austria — 5SLAC RSXS collaboration, USA — 6present address: Institut für Experimentalphysik, FU Berlin
We studied the laser induced ultrafast magnetic and structural dynamics of a metallic 4f semiconductor and antiferromagentic EuTe thin film. The dynamics were mapped using the strong resonant x-ray scattering signal of the antiferromagnetic (001/2) superstructure and (001) structural reflection. Here we show how different excitation scenarios have similiar but at certain delays crucially different influence on the ultrafast magnetic and structural dynamics. The optical pump xray probe measurements have been performed in one experiment at the SXR-beamline of LCLS. Supported by the BMBF through contract 05K10PK2.