Purely magnetic logic based on polarized spin waves

Abstract

Spin wave, the precession of magnetic order in magnetic materials, is a collective excitation that carries spin angular momentum. Similar to the acoustic or optical waves, the spin wave also possesses the polarization degree of freedom. Although such polarization degrees of freedom are frozen in ferromagnets, they are fully unlocked in antiferromagnets or ferrimagnets. Here we introduce the concept of magnetic gating and demonstrate a spin wave analog of the Datta-Das spin transistor in antiferromagnet. Utilizing the interplay between polarized spin wave and the antiferromagnetic domain walls, we propose a universal logic gate of pure magnetic nature, which realizes all Boolean operations in one single magnetic structure. We further construct a full functional 4-bit Arithmetic Logic Unit using only sixteen spin wave universal logic gates, operating in a weaving fashion as a Jacquard loom machine. The spin wave-based architecture proposed here also sets a model for the future energy efficient non-volatile computing, the distributed processing-in-memory computing, and the evolvable neuromorphic computing.

arXiv comment6 pages, 5 figures, 1 supplementary file. Supplemented movies can be requested from the authors

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• Chirality as Generalized Spin-Orbit Interaction in Spintronics
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• Non-Hermitian coherent coupling of nanomagnets by exchange spin waves
• Skew scattering and side jump of spin wave across magnetic texture
• Skyrmion Based Magnonic Crystals
• Geometric magnonics with chiral magnetic domain walls
• Spin wave driven domain wall motion in easy-plane ferromagnets: a particle perspective
• Interplay between spin wave and magnetic vortex
• Curvilinear manipulation of polarized spin wave
• Anti-helical edge magnons in patterned antiferromagnetic thin film
• Magnetically switchable spin wave retarder with $90^{\circ }$ antiferromagnetic domain wall
• Anatomy of spin wave driven magnetic texture motion via magnonic torques
• Dual function spin-wave logic gates based on electric field control magnetic anisotropy boundary
• Commensurate vortex core switching in magnetic nanodisks at Gigahertz frequencies
• Anomalous impact of thermal fluctuations on spintransfer torque induced ferrimagnetic switching
• Rayleigh anomalies and disorder-induced mixing of polarizations at nanoscale in amorphous solids. Testing 1-octyl-3-methylimidazolium chloride glass
• Geometric phase and a nonreciprocal spin wave circular polarizer
• Chirality and polarization of inertial antiferromagnetic resonances driven by spin-orbit torques