Regensburg 2016 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 36: Magnetization and Demagnetization Dynamics III
MA 36.6: Vortrag
Mittwoch, 9. März 2016, 16:15–16:30, H34
Ultrafast magnetization dynamics FeRh — •Robert Carley1, Manuel Izquierdo1, Sebastian Carron6, Tyler Chase4, Bruce Clemens4, Georgi Dakovski6, Eric Fullerton5, Patrick Granitzka4, Alexander Gray3, Stefan Günther2, Daniel Higley4, Emmanuelle Jal3, Loïc Le Guyader7, Joel Li4, Serguei Molodtsov1, Mike Minitti6, Ankush Mitra6, Alexander Reid3, William Schlotter6, Vojtech Uhlir5, Joachim Stöhr3, Hermann Dürr3, Christian Back2, Andreas Scherz1, Alexander Yaroslavtsev1, and Ruslan Kurta1 — 1European XFEL, Germany — 2Universität Regensburg, Germany — 3Stanford Institute for Materials and Energy Science, USA — 4Stanford University, USA — 5University of California San Diego, USA — 6Linac Coherent Light Source, Stanford, USA — 7Helmholtz Zentrum Berlin für Materialien und Energie, Germany
We report on an experimental study of the laser-driven antiferromagnetic (AFM) to ferromagnetic (FM) phase transition in FeRh using the time-, element-, and spatially resolving technique of resonant x-ray diffraction at the Fe L3 edge. We observe sub-ps magnetic transients followed by FM nucleation on the 10 ps timescale, and finally slower domain dynamics. This contribution will focus on the sub-ps dynamics, which provide a detailed insight into the microscopic mechanisms underlying the AFM-FM transition.