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

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.

To appear in Applied Physics Letters

References in corpus (5)

• Artificial "spin ice" in a geometrically frustrated lattice of nanoscale ferromagnetic islands
• Extensive degeneracy, Coulomb phase and magnetic monopoles in an artificial realization of the square ice model
• Spectral analysis of topological defects in an artificial spin-ice lattice
• Engineering Relaxation Pathways in Building Blocks of Artificial Spin Ice for Computation
• Reconfigurable pinwheel artificial-spin-ice and superconductor hybrid device