Regensburg 2016 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 48: Poster Session II
MA 48.20: Poster
Donnerstag, 10. März 2016, 15:00–18:00, Poster B1
Laser-driven ferromagnetic ordering in FeRh — •Robert Carley1, Sebastian Carron6, Manuel Izquierdo1, 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, and Andreas Scherz1 — 1European XFEL — 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
FeRh undergoes a first order phase transition from antiferromagnetic (AFM) to ferromagnetic (FM) where the magnetization is the order parameter. The transition is accompanied by an isotropic lattice expansion in the bulk. The transition has been extensively studied theoretically and experimentally, in thermal equilibrium and in the time domain, but a precise understanding remains elusive. We have studied the laser-driven phase transition with time-resolved x-ray diffraction (tr-RXD) at the Linac Coherent Light Source. The experiment has revealed a number of phenomena from sub-ps magnetic transients, FM nucleation, and domain growth processes with nanometer spatial resolution and femtosecond time resolution from the electronic point-of-view of the Fe L3 edge.