Spin-wave logic devices based on isotropic forward volume magneto-static waves

TL;DR

This paper introduces a novel spin-wave majority gate design utilizing isotropic forward volume magneto-static waves, which improves transmission efficiency and reduces parasitic effects compared to traditional in-plane magnetized devices.

Contribution

The paper presents a new design for a spin-wave majority gate based on isotropic forward volume magneto-static waves, demonstrating advantages over existing in-plane magnetized gates.

Findings

High spin-wave transmission through the gate

Reduced energy consumption in the proposed design

Suppressed parasitic short-wavelength exchange spin waves

Abstract

We propose the utilization of isotropic forward volume magneto-static spin waves in modern wave-based logic devices and suggest a concrete design for a spin-wave majority gate operating with these waves. We demonstrate by numerical simulations that the proposed out-of-plane magnetized majority gate overcomes the limitations of anisotropic in-plane magnetized majority gates due to the high spin-wave transmission through the gate, which enables a reduced energy consumption of these devices. Moreover, the functionality of the out-of-plane majority gate is increased due to the lack of parasitic generation of short-wavelength exchange spin waves.