Magnon based logic in a multi-terminal YIG/Pt nanostructure

TL;DR

This paper demonstrates a magnon-based logic device using YIG/Pt nanostructures that can perform multiple logic operations like AND, OR, and majority gate functions at GHz frequencies, promising for scalable spintronic computing.

Contribution

It introduces a novel magnon-based logic device utilizing incoherent superposition in YIG/Pt structures to implement multiple logic functions within a single device.

Findings

Successful experimental realization of a magnon majority gate.

Demonstration of multiple logic operations (AND, OR) in one device.

Operation at several GHz frequencies with potential for miniaturization.

Abstract

Boolean logic is the foundation of modern digital information processing. Recently, there has been a growing interest in phenomena based on pure spin currents, which allow to move from charge to spin based logic gates. We study a proof-of-principle logic device based on the ferrimagnetic insulator Yttrium Iron Garnet (YIG), with Pt strips acting as injectors and detectors for nonequilibrium magnons. We experimentally observe incoherent superposition of magnons generated by different injectors. This allows to implement a fully functional majority gate, enabling multiple logic operations (AND and OR) in one and the same device. Clocking frequencies of the order of several GHz and straightforward down-scaling make our device promising for applications.