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Published on: February 1, 2017
A thermodynamic core using voltage-controlled spin-orbit-torque magnetic tunnel junctions
Albert Lee1, Bingqian Dai1, Di Wu1
1Department of Electrical and Computer Engineering, UCLA, Los Angeles, CA, 90095, United States of America.
Abstract:
We present a magnetic implementation of a thermodynamic computing fabric. Magnetic devices within computing cores harness thermodynamics through its voltage-controlled thermal stability; while the evolution of network states is guided by the spin-orbit-torque effect. We theoretically derive the dynamics of the cores and show that the computing fabric can successfully compute ground states of a Boltzmann Machine. Subsequently, we demonstrate the physical realization of these devices based on a CoFeB-MgO magnetic tunnel junction structure. The results of this work pave the path towards the realization of highly efficient, high-performance thermodynamic computing hardware. Finally, this paper will also give a perspective of computing beyond thermodynamic computing.
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