# Ultralow Energy Analog Straintronics Using Multiferroic Composites

## TL;DR

This paper demonstrates the potential of multiferroic composites to enable ultra-low-energy analog signal processing by harnessing the analog behavior of magnetostrictive nanomagnets, eliminating the need for charge-based transistors.

## Contribution

It introduces a novel approach to utilize magnetostrictive nanomagnets for analog signal processing within multiferroic composites, supported by stochastic modeling at room temperature.

## Key findings

- Existence of a transistor-like high-gain region in nanomagnet input-output characteristics.
- Potential for ultra-low-energy analog and mixed signal processing.
- Elimination of charge-based transistors in future information systems.

## Abstract

Electric field-induced magnetization switching in multiferroics holds profound promise for ultra-low-energy computing in beyond Moore's law era. Bistable nanomagnets in the multiferroics are usually deemed to be suitable for storing a binary bit of information and switching between the two stable states allows us to process digital information. However, it requires to process continuous analog signals too for seamless integration of nanomagnetic devices in our future information processing systems. Here, we show that it is possible to harness the analog nature in the magnetostrictive nanomagnets, contrary to writing a digital bit of information. By solving stochastic Landau-Lifshitz-Gilbert equation of magnetization dynamics at room-temperature, we demonstrate such possibility and show that there exists a transistor-like high-gain region in the input-output characteristics of the magnetostrictive nanomagnets in strain-mediated multiferroic composites. This can be the basis of ultra-low-energy analog and mixed signal precessing in our future information processing systems and it eliminates the requirement of using charge-based transistors.