Switching magnon chirality in artificial antiferromagnet

TL;DR

This paper demonstrates the ability to switch and detect magnon chirality in an artificial antiferromagnet, revealing tunable resonance modes and enabling potential applications in chirality-based spintronics.

Contribution

It introduces a method to control and read magnon chirality in an artificial antiferromagnet, highlighting coexisting resonance modes for tunability.

Findings

Discovery of coexisting antiferromagnetic and ferromagnetic resonance modes

Successful switching and reading of magnon chirality

Potential for chirality-based spintronic devices

Abstract

Magnons in antiferromagnets can support both right-handed and left-handed chiralities, which shed a light on the chirality-based spintronics. Here we demonstrate the switching and reading of magnon chirality in an artificial antiferromagnet. The coexisting antiferromagnetic and ferromagnetic characteristic resonance modes are discovered, which permits a high tunability in the modulation of magnon chirality. The reading of the chirality is accomplished via the chirality-dependent spin pumping as well as spin rectification effect. Our result illustrates an ideal antiferromagnetic platform for handling magnon chirality and paves the way for chirality-based spintronics.