Data wydarzenia:

Seminarium ISQI - Prof. Vladimir Golub, V.G. Barykhtar Institute NASU of Ukraine

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Dramatic increase of magnetic resonance frequencies of ferromagnetics in hybrid structures

Date, Time: 16.10, 15:00 - 16:00
Speaker: Prof. Vladimir Golub, V.G. Barykhtar Institute NASU of Ukraine, Kyiv, Ukraine

Location
hybrid meetnig (room 16), link (MSTeams) >>>

The last two decades are associated with significant progress in the field of spintronics and magnonics. Further development in this area faces some fundamental challenges: to increase of operating frequencies up to tens or hundreds of gigahertz in moderate magnetics field. This frequency range is well above the operational frequencies of the systems based of conventional ferromagnetic elements. As a result, the main activity was shifted to the investigation of antiferromagnetics and ferrimagnetics having natural resonance frequencies in subteraherz and terahertz range. However, so far the main problem for incorporation of such materials in real electronic devices is an excitation and a registration of spin dynamics without using quite sophisticated techniques. Here I would like to show, that there is another approach allowing the increase the operational frequencies of conventional ferromagnetic elements by an order of magnitude using quite simple technological approaches.

I will present our resent experimental results and theoretical investigations done in close collaboration with AMU (Poznan, Poland), CEITEC BUT (Brno, Czech Republic) and KTH (Stockholm, Sweden) as for two systems composed of thin ferromagnetic film: (i) placed between superconducting layers and (ii) covered by periodic arrays of metallic stripes.

https://isik.amu.edu.pl/seminars/prof-vladimir-golub-2/