Magnetic Straintronics for Ultra-Energy-Efficient Unconventional Computing: A Review
IEEE Transactions on Magnetics(2024)
Abstract
With rapidly increasing edge intelligence, domain-specific computers in heterogeneous fabrics are likely to rule the roost. Judicious choice of device technology and computational paradigms can drastically reduce the size, weight, and power (SWaP) of such computers, while also making them fully autonomous (clockless) and resilient against malicious attacks. Here, we review the promise of an emerging device technology –
magnetic straintronics
– in implementing extremely energy-efficient hardware for a wide variety of computing paradigms: neuromorphic, probabilistic, Bayesian belief networks, Boltzmann and Ising machines, matrix multipliers for deep learning networks, and reconfigurable stochastic neurons for p-computing. Magnetic straintronics has two important features – non-volatilty and very low energy expenditure – which are conducive to edge processing. We discuss some unconventional computing paradigms implemented with magnetic straintronics, while pointing out the remarkable energy efficiency in all cases.
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Key words
Magnetic straintronics,neuromorphic architectures,analog and binary stochastic neurons,Bayesian inference engines,Boltzmann and Ising machines,matrix multiplication hardware
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