Miłosz Zdunek
(Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614, Poznań, Poland)
The properties of surface acoustic waves (fig. 1a) and spin waves propagating in magnetic [Ni$_{80}$Fe$_{20}$/Au/Co/Au]$_{10}$ multilayers (fig. 1b) on silicon substrate have been investigated by high resolution Brillouin spectroscopy [1-2]. The behavior of spin waves was studied in two experimental geometries: Backward Volume (BV) geometry and Damon-Eshbach (DE) geometry [3]. The thickness of cobalt (Co) layer was different for each sample and the influence of the layer’s thickness on the dispersion relation has been tested. The samples were decorated with non-magnetic aluminum (Al) periodic structures. The crossing of phonon and magnon dispersion relations has also been examined. Additionally, the theoretical dispersion dependences have been obtained from simulations performed with finite element method.
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5. Phonons, plasmons, magnons and polaritons
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Miłosz Zdunek
(Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614, Poznań, Poland)
Dr
Aleksandra Trzaskowska
(Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614, Poznań, Poland)
Prof.
Sławomir Mielcarek
(Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614, Poznań, Poland)
Dr
Jarosław Wojciech Kłos
(Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614, Poznań, Poland)
Mr
Nandan K.P. Babu
(Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614, Poznań, Poland)
Dr
Maciej Wiesner
(Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614, Poznań, Poland)
Dr
Piotr Kuświk
(Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland)
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