Deterministic Electrical Control of Single Magnetic Bubbles in Nanostructured Cells

TL;DR

This paper demonstrates the deterministic electrical creation, deletion, and detection of single magnetic bubbles in nanostructured cells, advancing the potential for bubble-based spintronic devices.

Contribution

It introduces a method for precise electrical control and detection of individual magnetic bubbles in nanostructured materials, combining experimental and simulation approaches.

Findings

Low and high current pulses can create and delete single magnetic bubbles.

Thermal heating and spin-transfer torque enable mutual writing and deleting.

In-situ detection of bubbles achieved via anisotropic magnetoresistance.

Abstract

Localized particle-like spin textures have been found to exhibit emergent electromagnetic properties, which hold promise for the development of intriguing spintronic devices. Among these textures, magnetic bubbles represent localized spin configurations that could serve as data bits. However, the precise methods for their electrical manipulation remain uncertain. Here, we demonstrate the deterministic electrical manipulations and detections of single magnetic bubbles in kagome-latticed Fe3Sn2 magnetic nanostructured cells. The current-induced dynamics of magnetic bubbles were explored using nanosecond pulsed currents. We show single pulsed currents with low and high densities can be applied for the creation and deletion of a single bubble, respectively. The mutual writing-deleting operations on single bubbles are attributed to the thermal heating and non-thermal spin-transfer torque effects in combination with micromagnetic simulations. We also realized the in-situ detection of a single bubble using the anisotropic magnetoresistance effect through a standard four-probe method. Our results could propel the development of bubble-based spintronic devices.