New materials for spintronics: ferromagnets vs. antiferromagnets

9th. Jan. 2019, Kolloquium, MC122, Campus Duisburg, Universität Duisburg-Essen

Time:
Start: 9th. Jan. 2019. 01:00 p.m.
End: 9th. Jan. 2019. 03:00 p.m.

Author(s):
Prof. Dr. rer. nat Ulrich Nowak University of Konstanz

Abstract:

Antiferromagnetic materials are in the focus of current research in magnetism because of their potential for applications in spintronics. Possible advantages of spintronic devices based on antiferromagnetic materials include their lack of stray fields, the low susceptibility to external fields, and the rich choice of new materials, including a variety of antiferromagnetic insulators.

This talk focuses on a comparison between spin dynamics in ferromagnets and antiferromagnets, respectively, based on spin model simulations. We present a new concept for a magnonic spin valve based on a trilayer of insulating ferromagnetic and antiferromagnetic materials and we compare the difference of the spin dynamics of ferro- and antiferromagnets regarding the mobility of their domain walls, their superparamagnetic limit in nanoparticles, and their efficiency for spin torque switching.

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