Switching magnetic vortex core by a single nanosecond current pulse

TL;DR

This paper demonstrates that a single nanosecond current pulse can reliably switch the polarity of a magnetic vortex core in a ferromagnetic nanodisk, enabling potential applications in vortex core memory technology.

Contribution

It introduces a method for fast, precise switching of magnetic vortex core polarity using a single nanosecond current pulse, advancing magnetic memory technology.

Findings

Single nanosecond current pulse switches vortex core polarity.

Precise control of vortex core direction achieved.

Potential application in vortex core memory.

Abstract

In a ferromagnetic nanodisk, the magnetization tends to swirl around in the plane of the disk and can point either up or down at the center of this magnetic vortex. This binary state can be useful for information storage. It is demonstrated that a single nanosecond current pulse can switch the core polarity. This method also provides the precise control of the core direction, which constitutes fundamental technology for realizing a vortex core memory.