Bennett clocking of nanomagnetic logic using electrically induced rotation of magnetization in multiferroic single-domain nanomagnets

TL;DR

This paper demonstrates a novel Bennett clocking method for nanomagnetic logic using electrically induced magnetization rotation in multiferroic nanomagnets, offering a low-voltage, efficient alternative to traditional techniques.

Contribution

It introduces a new Bennett clocking approach utilizing electric fields to rotate magnetization in multiferroic nanomagnets, improving efficiency over spin-transfer torque methods.

Findings

Electrically induced magnetization rotation achieves nearly 900 degrees.

A potential of ~0.2 V suffices for effective Bennett clocking.

Method enables unidirectional logic bit propagation.

Abstract

The authors show that it is possible to rotate the magnetization of a multiferroic (strain-coupled two-layer magnetostrictive-piezoelectric) nanomagnet by a large angle with a small electrostatic potential. This can implement Bennett clocking in nanomagnetic logic arrays resulting in unidirectional propagation of logic bits from one stage to another. This method of Bennett clocking is superior to using spin-transfer torque or local magnetic fields for magnetization rotation. For realistic parameters, it is shown that a potential of ~ 0.2 V applied to a multiferroic nanomagnet can rotate its magnetization by nearly 900 to implement Bennett clocking.