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MA: Fachverband Magnetismus
MA 43: Magnetization Dynamics III
MA 43.10: Vortrag
Donnerstag, 3. April 2014, 17:30–17:45, HSZ 401
Material engineering for all-optical switching — •Ute Bierbrauer1, Stéphane Mangin2,3, Matthias Gottwald3, Charles-Henri Lambert2,3, Daniel Steil1, Vojtech Uhlíř3, Lin Pang4, Michel Hehn2, Sabine Alebrand1, Mirko Cinchetti1, Stefan Mathias1, Grégory Malinowski2,5, Yeshaiahu Fainman4, Eric E. Fullerton3,4, and Martin Aeschlimann1 — 1University of Kaiserslautern, Germany — 2Institute Jean Lamour, Université de Lorraine, France — 3Center for Magnetic Recording Research, San Diego, USA — 4University of California San Diego, USA — 5Laboratoire de Physique des Solides, Université Paris-Sud, France
Since the discovery of all-optical switching (AOS) in ferrimagnetic rare-earth transition metal (RE-TM) alloy films [1,2] the question arose if a manipulation of magnetic order without applying magnetic fields is also possible in engineered ferrimagnetic materials without rare-earth-elements.
Here we demonstrate that AOS can also be observed in more complex systems, including multilayer structures and synthetic ferrimagnetic hetero-structures. Furthermore we show the magnetization dynamics of these materials, particularly with a closer view on the magnetization reversal occurring on the ultrafast timescale. The presented results open a new pathway to engineering materials for future applications based on all-optical control of magnetic order and show new insights about the phenomenon of AOS.
[1] C.D. Stanciu et al., PRL 99, 047601 (2007)
[2] S. Alebrand et al., APL 101, 162408 (2012)