Writable spin wave nanochannels in an artificial-spin-ice-mediated ferromagnetic thin film

TL;DR

This paper introduces writable magnonic nanochannels in a ferromagnetic thin film using artificial spin ice, enabling reconfigurable and programmable spin-wave pathways for low-power magnonic circuits.

Contribution

It demonstrates, through micromagnetic simulations, the creation of globally switchable and locally writable spin-wave nanochannels in a ferromagnetic film mediated by artificial spin ice.

Findings

Reconfigurable spin-wave nanochannels can be written and erased.

Spin-wave pathways are globally switchable.

Potential for programmable magnonic circuits and logic devices.

Abstract

Magnonics, which employs spin-waves to transmit and process information, is a promising venue for low-power data processing. One of the major challenges is the local control of the spin-wave propagation path. Here, we introduce the concept of writable magnonics by taking advantage of the highly flexible reconfigurability and rewritability of artificial spin ice systems. Using micromagnetic simulations, we show that globally switchable spin-wave propagation and the locally writable spin-wave nanochannels can be realized in a ferromagnetic thin film underlying an artificial pinwheel spin ice. The rewritable magnonics enabled by reconfigurable spin wave nanochannels provides a unique setting to design programmable magnonic circuits and logic devices for ultra-low power applications.