Dresden 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 42: Posters Magnetism I
MA 42.33: Poster
Mittwoch, 18. März 2020, 15:00–18:00, P3
Engineering the interface of Iron/Platinum spintronic terahertz emitters — •Moritz Ruhwedel1, Laura Scheuer1, Rene Beigang1, Evangelos Th. Papaioannou2, and Burkard Hillebrands1 — 1Fachbereich Physik, TU Kaiserslautern und Landesforschungszentrum OPTIMAS, Kaiserslautern, Germany — 2Fachbereich Physik, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
Spintronic Fe/Pt-bilayer systems are considered as a accessible and low-cost approach for the generation of THz radiation. However, the influence of various properties of these bilayer systems is still subject of current research [1-3]. Here, we report on the influence of varied interface conditions for the high energy spin polarized electrons on the emitted THz radiation of the Fe/Pt-bilayer systems. Hereby, a variation of the interface between the Fe- and the Pt-layer is achieved by a variation of the fabrication temperature of the Pt-layer. The resulting transparency of the interface in the low energy regime with respect to the fabrication temperatures is characterized by means of Vector-Network-Analyzer Ferromagnetic Resonance (VNA-FMR) spectroscopy. An increased amplitude of the emitted THz radiation for larger values of the spin mixing conductivity in the low energy regime is observed, which potentially allows for an alternative characterization and further optimization of the spintronic THz-emitters.
[1] G. Torosyan et al., Sci. Rep. 8, 1311 (2018)
[2] E. Papaioannou et al., IEEE Trans. Magn 99, 1-5 (2018)
[3] D. Nenno et al., Sci. Rep. 9, 13348 (2019)