Nanofluidic logic based on chiral skyrmion flows

TL;DR

This paper introduces a nanofluidic logic system utilizing chiral magnetic skyrmions flowing in parallel channels, controlled by spin polarization, enabling simplified logical operations without requiring single skyrmion control.

Contribution

It presents a novel nanofluidic logic computing system based on chiral skyrmion flows manipulated by spin polarization angles, reducing complexity in skyrmion logic devices.

Findings

Skyrmion flows can perform logical operations in nanofluidic systems.

Flow behavior is controlled by adjusting the spin polarization angle.

The system simplifies skyrmion logic by avoiding single skyrmion control.

Abstract

Particle-like chiral magnetic skyrmions can flow in nanotracks and behave like chiral fluids. Using interacting flows to perform logical operations is an important topic in microfluidics and nanofluidics. Here, we report a basic nanofluidic logic computing system based on chiral magnetic skyrmions flowing in parallel pipelines connected by an H-shaped junction. The flow behaviors could be manipulated by adjusting the spin polarization angle, which controls the intrinsic skyrmion Hall angle. We demonstrate that within certain range of the spin polarization angle, fully developed skyrmion flows could lead to fluidic logical operations, which significantly reduce the complexity of skyrmion logic as there is no need for deterministic creation, precise control, and detection of a single isolated skyrmion. Our results suggest that the chiral flow behaviors of magnetic quasiparticles may offer possibilities for spintronic and nanofluidic functions.