Paving Spin-Wave Fibers in Magnonic Nanocircuits Using Spin-Orbit Torque

Abstract

Recent studies have revealed that domain walls in magnetic nanostructures can serve as compact, energy-efficient spin-wave waveguides for building magnonic devices that are considered promising candidates for overcoming the challenges and bottlenecks of today's CMOS technologies. However, imprinting long strip-domain walls into magnetic nanowires remains a challenge, especially in curved geometries. Here, through micromagnetic simulations, we present a method for writing strip-domain walls into curved magnetic nanowires using spin-orbit torque. We employ Y-shaped magnetic nanostructures as well as an S-shaped magnetic nanowire to demonstrate the injection process. In addition, we verify that the Y-shaped nanostructures that incorporate strip-domain walls can function as superior spin-wave multiplexers, and that spin-wave propagation along each conduit can be controllably manipulated. This spin-wave multiplexer based on strip-domain walls is expected to become a key signal-processing component in magnon spintronics.

arXiv commentmain manuscript: 38 pages and 8 figures; supplemental material: 21 pages, 12 figures, and 1 table

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Cited by in corpus (8)

• Magnetic texture based magnonics
• Enhanced skyrmion motion via strip domain wall
• Skyrmion Tubes as Magnonic Waveguides
• Energy-efficient W${}_{\text{100-x}}$Ta${}_{\text{x}}$/CoFeB/MgO spin Hall nano-oscillators
• Fermions in the presence of topological structures under geometric constrictions
• Amplifying spin waves along Néel domain wall by spin-orbit torque
• Domain wall skyrmion-based magnonic crystal
• Spin wave frequency hysteresis in Ir/Co/Pt multilayers with Dzyaloshinskii-Moriya interaction