Element-Specific Magnetization Dynamics of Complex Magnetic Systems Probed by Ultrafast Magneto-Optical Spectroscopy
| Autor: | Weder, D., Günther, C., Schneider, M., Hessing, P., Weigand, M., Liu, X., Merhe, A., Pedersoli, E., Capotondi, F., Pfau, B., von Korff Schmising, Clemens, Willems, Felix, Sharma, Sangeeta, Yao, Kelvin, Borchert, Martin, Hennecke, Martin, Schick, Daniel, Radu, Ilie, Strüber, Christian, Engel, Dieter, Shokeen, Vishal, Buck, Jens, Bagschik, Kai, Viefhaus, Jens, Hartmann, Gregor, Manschwetus, Bastian, Grunewald, Soeren, Düsterer, Stefan, Jal, Emmanuelle, Vodungbo, B., Lüning, Jan, Eisebitt, Stefan |
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| Přispěvatelé: | Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Phase transition
Magnetism 02 engineering and technology free electron laser lcsh:Technology 01 natural sciences 7. Clean energy lcsh:Chemistry Magnetization transient absorption spectroscopy 0103 physical sciences High harmonic generation General Materials Science 010306 general physics Spectroscopy lcsh:QH301-705.5 Instrumentation ComputingMilieux_MISCELLANEOUS Fluid Flow and Transfer Processes Physics Magnetization dynamics Condensed matter physics lcsh:T Process Chemistry and Technology General Engineering Free-electron laser 021001 nanoscience & nanotechnology Condensed Matter Physics lcsh:QC1-999 high harmonic generation Computer Science Applications lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 ultrafast demagnetization dynamics [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology ddc:600 Ultrashort pulse Den kondenserade materiens fysik lcsh:Physics |
| Zdroj: | Applied Sciences Applied Sciences, MDPI, 2020, 10 (21), pp.7580. ⟨10.3390/app10217580⟩ Volume 10 Issue 21 Applied Sciences 10(21), 7580 (2020). doi:10.3390/app10217580 Applied Sciences, Vol 10, Iss 7580, p 7580 (2020) |
| ISSN: | 2076-3417 |
| Popis: | The vision to manipulate and control magnetism with light is driven on the one hand by fundamental questions of direct and indirect photon-spin interactions, and on the other hand by the necessity to cope with ever growing data volumes, requiring radically new approaches on how to write, read and process information. Here, we present two complementary experimental geometries to access the element-specific magnetization dynamics of complex magnetic systems via ultrafast magneto-optical spectroscopy in the extreme ultraviolet spectral range. First, we employ linearly polarized radiation of a free electron laser facility to demonstrate decoupled dynamics of the two sublattices of an FeGd alloy, a prerequisite for all-optical magnetization switching. Second, we use circularly polarized radiation generated in a laboratory-based high harmonic generation setup to show optical inter-site spin transfer in a CoPt alloy, a mechanism which only very recently has been predicted to mediate ultrafast metamagnetic phase transitions. |
| Databáze: | OpenAIRE |
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