Engineering Ultrafast Magnetism
We employ time-resolved X-ray magnetic circular dichroism with fs time resolution to investigate the ultrafast, laser-driven dynamics of multi-sublattice materials, with both ferromagnetic and antiferromagnetic coupling. These measurements provide evidence for a demagnetization time that scales with the elemental magnetic moment and varies with the exchange interaction symmetry.
KeywordsAntiferromagnetic Coupling Magnetic Sublattices Elementary Building Block Ferrimagnetic Material Germany 3Institute
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Funding from the European Community’s Seventh Framework Program (FP7/2007-2013 Grants No. NMP3-SL-2008-214469 (UltraMagnetron) and No. 214810 (FANTOMAS) and ERC Grant No. 257280 (Femtomagnetism) as well as Grant No. 226716), the German Federal Ministry of Education and Research (BMBF) Grant No. 05K10PG2 (FEMTOSPEX), the Foundation for Fundamental Research on Matter (FOM) and the Netherlands Organization for Scientific Research (NWO) is gratefully acknowledged.
- 1.I. Radu, K. Vahaplar, C. Stamm, T. Kachel, N. Pontius, H. A. Dürr, T. A. Ostler, J. Barker, R. F. L. Evans, R. W. Chantrell, A. Tsukamoto, A. Itoh, A. Kirilyuk, Th. Rasing, A. V. Kimel, “Transient ferromagnetic-like state mediating ultrafast reversal of antiferromagnetically coupled spins” Nature 472, 205–208 (2001).Google Scholar
- 2.A. Kirilyuk, A.V. Kimel, Th. Rasing, “Ultrafast optical manipulation of magnetic order” Rev. Mod. Phys. 82, 2731 (2010).Google Scholar
- 3.T. A. Ostler, J. Barker, R. F. L. Evans, R. Chantrell, U. Atxitia, O. Chubykalo-Fesenko, S. El Moussaoui, L. Le Guyader, E. Mengotti, L. J. Heyderman, F. Nolting, A. Tsukamoto, A. Itoh, D. Afanasiev, B. A. Ivanov, A. M. Kalashnikova, K. Vahaplar, J. Mentink, A. Kirilyuk,Th. Rasing and A. V. Kimel, “Ultrafast Heating as a Sufficient Stimulus for Magnetization Reversal in a Ferrimagnet” Nat. Commun. 3, 666 (2012).Google Scholar