Magnonic Proximity Effect in Insulating Ferro- and Antiferromagnetic Trilayers

Abstract

The design of spin-transport based devices such as magnon transistors or spin valves will require multilayer systems composed of different magnetic materials with different physical properties. Such layered structures can show various interface effects, one class of which being proximity effects, where a certain physical phenomenon that occurs in the one layers leaks into another one. In this work a magnetic proximity effect is studied in trilayers of different ferro- and antiferromagnetic materials within an atomistic spin model. We find the magnetic order in the central layer - with lower critical temperature - enhanced, even for the case of an antiferromagnet surrounded by ferromagnets. We further characterize this proximity effect via the magnon spectra which are specifically altered, especially for the case of the antiferromagnet in the central layer.

References in corpus (5)

• Electrically controlled long-distance spin transport through an antiferromagnetic insulator
• Spin-wave logic devices based on isotropic forward volume magneto-static waves
• Evolution of the Spin Hall Magnetoresistance in Cr${}_2$O${}_3$/Pt bilayers close to the Néel temperature
• Realistic finite temperature simulations of magnetic systems using quantum statistics
• Spin transport across antiferromagnets induced by the spin Seebeck effect

Cited by in corpus (1)

• Observation of nonreciprocal magnon Hanle effect