2020/08/31 by K. D. Stenning, Kilian D. Stenning, J. C. Gartside +8 · 14 citations
Engineering · Physics and Astronomy · #Advanced Memory and Neural Computing #Bending #Composite material #Computer science #Crystal (programming language) #GaN-based semiconductor devices and materials #Interferometry #Magnetic properties of thin films #Materials science #Nanotechnology #Optics #Optoelectronics #Phase (matter) #Physics #cond-mat.mes-hall
paper · pdf · doi:10.1021/acsnano.0c06894
published in ACS Nano 15(1), 674-685 (American Chemical Society) · 15 pages, 12 figures
openalex publication_date 2020/12/15 · arxiv created 2021/01/20 · arxiv updated 2021/01/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Strongly interacting nanomagnetic systems are pivotal across next-generation technologies including reconfigurable magnonics and neuromorphic computation. Controlling magnetization states and local coupling between neighboring nanoelements allows vast reconfigurability and a host of associated functionalities. However, existing designs typically suffer from an inability to tailor interelement coupling post-fabrication and nanoelements restricted to a pair of Ising-like magnetization states. Here, we propose a class of reconfigurable magnonic crystals incorporating nanodisks as the functional element. Ferromagnetic nanodisks are crucially bistable in macrospin and vortex states, allowing interelement coupling to be selectively activated (macrospin) or deactivated (vortex). Through microstate engineering, we leverage the distinct coupling behaviors and magnonic band structures of bistable nanodisks to achieve reprogrammable magnonic waveguiding, bending, gating, and phase-shifting across a 2D network. The potential of nanodisk-based magnonics for wave-based computation is demonstrated via an all-magnon interferometer exhibiting XNOR logic functionality. Local microstate control is achieved here via topological magnetic writing using a magnetic force microscope tip.