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arXiv · 1701.03886

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

Xiangjun Xing·Philip W. T. Pong·J. Åkerman·Yan Zhou
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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.

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Xiangjun Xing, Philip W. T. Pong, J. Åkerman, Yan Zhou. 2017-01-14. Paving Spin-Wave Fibers in Magnonic Nanocircuits Using Spin-Orbit Torque. https://doi.org/10.1103/physrevapplied.7.054016

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