First experimental demonstration of a scalable linear majority gate based on spin waves

TL;DR

This paper presents the first experimental demonstration of a scalable spin wave majority gate, showcasing its potential for low-energy, all-electrical microwave circuit applications in logic operations.

Contribution

It is the first to experimentally realize a scalable spin wave majority gate with all-electrical input/output, demonstrating full truth table and adjustable logic functions.

Findings

Successfully demonstrated majority logic operation with spin waves

Achieved distinction between strong and weak majorities

Projected low energy consumption compared to CMOS

Abstract

We report on the first experimental demonstration of majority logic operation using spin waves in a scaled device with an in-line input and output layout. The device operation is based on the interference of spin waves generated and detected by inductive antennas in an all-electrical microwave circuit. We demonstrate the full truth table of a majority logic function with the ability to distinguish between strong and weak majority, as well as an inverted majority function by adjusting the operation frequency. Circuit performance projections predict low energy consumption of spin wave based compared to CMOS for large arithmetic circuits.