[Fuuk-ext-l] Invitation to Seminar of Institute of Physics, MFF UK, on Tue 26.10. from 14:00, speaker Ing. Jakub Železný, Ph.D.

[Jaroslav Hamrle]

Dear colleagues,

It is my pleasure to invite you to Seminar of Institute of Physics of 
Charles University, entitled:

*Spin currents and spin-torques in antiferromagnets*

Speaker: Ing. Jakub Železný, Ph.D. 
<https://www.fzu.cz/lide/ing-jakub-zelezny-phd>

Time:  Tuesday 26.10.2021 from 14:00

Place: Seminar room of Institute of Physics F285 (atelier) , second 
floor, Ke Karlovu 5, Prague

/Abstract://
/

/Conventional microelectronics based on semiconductors has been hugely 
successful, but it is reaching its physical limits. This accelerates the 
search for alternative technologies that could replace it. One such 
alternative is based on utilizing the spin of the electron in addition 
to its charge: a field known as spintronics. So far, spintronics has 
been mainly utilized in memories, but possible applications in 
processors or neuromorphic computing are also explored. Spintronics is 
typically based on ferromagnetic materials, but recently 
antiferromagnetic materials (materials that have a long-range magnetic 
order, but no net magnetic moment) have attracted attention since they 
have various possible advantages for spintronics such as a fast 
switching speed./

/Here we review recent progress in the understanding of how 
antiferromagnets can be utilized for spintronics. Although in simple 
antiferromagnets many of the key spintronics phenomena vanish, we show 
that in low symmetry or non-collinear antiferromagnets, most of the 
effects that exist in ferromagnets, are also present. For example, we 
have shown that in some antiferromagnets, electrical current is 
spin-polarized or that they can generate pure spin currents. We also 
demonstrate that these spin currents can generate a spin-torque, which 
can be used to control the orientation of the antiferromagnetic order, 
analogously to ferromagnetic materials./

With my best regards

Jaroslav Hamrle

-- 
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Mgr. Jaroslav Hamrle, Ph.D.
Institute of Physics, room F232
Faculty of Mathematics and Physics
Charles University
Ke Karlovu 5
121 16 Prague
Czech Republic

tel: +420-95155 1340
email: hamrle na karlov.mff.cuni.cz
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