A Thermodynamic Core using Voltage-Controlled Spin-Orbit-Torque Magnetic Tunnel Junctions

TL;DR

This paper introduces a magnetic thermodynamic computing core utilizing voltage-controlled spin-orbit-torque magnetic tunnel junctions, enabling efficient computation of Boltzmann Machine ground states and paving the way for advanced thermodynamic hardware.

Contribution

It presents a theoretical framework and physical realization of a thermodynamic computing core based on magnetic tunnel junctions, integrating thermodynamics with spin-orbit-torque effects.

Findings

Successful theoretical derivation of core dynamics

Physical implementation using CoFeB-MgO magnetic tunnel junctions

Potential for high-performance thermodynamic computing hardware

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.