An Introduction to Spin Wave Computing
Abdulqader Mahmoud,Florin Ciubotaru,Frederic Vanderveken,Andrii V. Chumak,Said Hamdioui,Christoph Adelmann,Sorin Cotofana +6 more
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TLDR
It is argued that spin-wave circuits need to be embedded in conventional CMOS circuits to obtain complete functional hybrid computing systems and the benchmark indicates that hybridspin-wave--CMOS systems promise ultralow-power operation and may ultimately outperform conventionalCMOS circuits in terms of the power-delay-area product.Abstract:
This paper provides a tutorial overview over recent vigorous efforts to develop computing systems based on spin waves instead of charges and voltages Spin-wave computing can be considered as a subfield of spintronics, which uses magnetic excitations for computation and memory applications The tutorial combines backgrounds in spin-wave and device physics as well as circuit engineering to create synergies between the physics and electrical engineering communities to advance the field towards practical spin-wave circuits After an introduction to magnetic interactions and spin-wave physics, all relevant basic aspects of spin-wave computing and individual spin-wave devices are reviewed The focus is on spin-wave majority gates as they are the most prominently pursued device concept Subsequently, we discuss the current status and the challenges to combine spin-wave gates and obtain circuits and ultimately computing systems, considering essential aspects such as gate interconnection, logic level restoration, input-output consistency, and fan-out achievement We argue that spin-wave circuits need to be embedded in conventional CMOS circuits to obtain complete functional hybrid computing systems The state of the art of benchmarking such hybrid spin-wave--CMOS systems is reviewed and the current challenges to realize such systems are discussed The benchmark indicates that hybrid spin-wave--CMOS systems promise ultralow-power operation and may ultimately outperform conventional CMOS circuits in terms of the power-delay-area product Current challenges to achieve this goal include low-power signal restoration in spin-wave circuits as well as efficient spin-wave transducersread more
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The 2021 Magnonics Roadmap.
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References
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Efficiency of Spin-Wave Bus for Information Transmission
TL;DR: In this paper, the authors compare the transport parameters such as signal attenuation and signal velocity for a spin-wave bus and a conventional electronic transmission line, and show that the spin wave bus is inferior to the traditional metal interconnects in all figures ofmerit.
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Design of spin wave functions-based logic circuits
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Magnetically tunable oscillators and filters
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Zero-field propagation of spin waves in waveguides prepared by focused ion beam direct writing
Lukáš Flajšman,Kai Wagner,Marek Vaňatka,Jonáš Gloss,Viola Křižáková,Michael Schmid,Helmut Schultheiss,Michal Urbánek +7 more
TL;DR: In this paper, a focused ion beam transforms the originally nonmagnetic fcc phase into the ferromagnetic bcc phase with additional control over the direction of uniaxial magnetic in-plane anisotropy.
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Magnetoelectric effect in rare earth ferrites, LnFe2O4
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