Ultra-low-energy non-volatile straintronic computing using single multiferroic composites

TL;DR

This paper demonstrates that single multiferroic composites can serve as universal logic gates, enabling ultra-low-energy, scalable, and efficient straintronic computing by leveraging magnetization switching in nanomagnets.

Contribution

It introduces a novel approach where single multiferroic composites function as universal logic gates, simplifying circuit design and reducing energy consumption in computing.

Findings

Single multiferroic composites can act as universal logic gates.

Magnetization switching in nanomagnets enables ultra-low-energy computation.

The approach simplifies large-scale circuit design.

Abstract

The primary impediment to continued downscaling of traditional charge-based electronic devices in accordance with Moore's law is the excessive energy dissipation that takes place in the device during switching of bits. One very promising solution is to utilize multiferroic heterostructures, comprised of a single-domain magnetostrictive nanomagnet strain-coupled to a piezoelectric layer, in which the magnetization can be switched between its two stable states while dissipating minuscule amount of energy. However, no efficient and viable means of computing is proposed so far. Here we show that such single multiferroic composites can act as universal logic gates for computing purposes, which we demonstrate by solving the stochastic Landau-Lifshitz-Gilbert (LLG) equation of magnetization dynamics in the presence of room-temperature thermal fluctuations. The proposed concept can overwhelmingly simplify the design of large-scale circuits and portend a highly dense yet an ultra-low-energy computing paradigm for our future information processing systems.