Nynke Vlietstra, RUG

Title: Detecting spin-current generated by a ferrimagnetic insulator
Session: Monday 5 October, 16:45

Abstract

In the past years, several experiments have been performed investigating the generation and detection of spin-currents by making use of an electrical insulating magnetic material. The advantage of using insulating materials for transport of information is the absence of charge currents, avoiding energy-losses in the system by for example Joule-heating. Using the ferromagnetic insulating material Yttrium Iron Garnet (YIG) we have performed experiments such as spin pumping[1], detection of the spin-Hall Magnetoresistance[2], as well as the spin-Seebeck effect[3]. The basics of these phenomena will be shown, pointing out that all of these effects can be detected by a single platinum (Pt) strip deposited on a YIG surface, making use of the high spin-orbit coupling in Pt, resulting in the presence of the (inverse) spin-Hall effect ((I)SHE).
[1] V. Castel et al., Appl. Phys. Lett. 101, 132414 (2012)
[2] N. Vlietstra et al., Phys. Rev. B 87, 184421 (2013)
[3] N. Vlietstra et al., Phys. Rev. B 90, 174436 (2014)

 

 

 

 

 

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