Single-Vertex Engineering of Domain Wall Motion in Artificial Spin Ice

IF 1.9 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Magnetics Pub Date : 2025-07-14 DOI:10.1109/TMAG.2025.3589081

Charu Singh;Neeti Keswani;Nirat Ray

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引用次数: 0

Abstract

In artificial spin ice (ASI) systems, where fabricated magnetic nanoislands meet at vertices, domain wall (DW) motion through these vertices plays a crucial role in determining the overall magnetic response. Among various vertex configurations, Y-shaped vertices are particularly interesting due to their asymmetric energy landscape, which influences DW propagation and stability. Efficient injection and control of transverse DWs (TDWs) are essential for reconfigurable magnetic states and functional spintronic applications. Using micromagnetic simulations, we investigate the effect of local distortions in Y-vertices on TDW dynamics. Small distortions modify energy barriers and affect DW transmission, while large distortions significantly alter TDW behavior, leading to distinct magnetic configurations. Our results reveal that both the degree of distortion and applied field strength dictate the achievable magnetic states, demonstrating a tunable route to controlling DW dynamics. These insights into vertex-mediated TDW manipulation provide a pathway for optimizing ASI-based spintronic devices with tailored magnetic properties.

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人工自旋冰中畴壁运动的单顶点工程

在人造自旋冰（ASI）系统中，制造的磁性纳米岛在顶点相遇，通过这些顶点的畴壁（DW）运动在决定整体磁响应中起着至关重要的作用。在各种顶点构型中，y形顶点由于其不对称的能量格局而特别有趣，这影响了DW的传播和稳定性。有效的注入和控制横向DWs （TDWs）是可重构磁态和功能自旋电子应用的必要条件。利用微磁模拟，我们研究了y顶点的局部畸变对TDW动力学的影响。小的畸变改变能量势垒并影响DW传输，而大的畸变显著改变TDW行为，导致不同的磁构型。我们的研究结果表明，畸变程度和外加场强都决定了可实现的磁态，证明了控制DW动力学的可调途径。这些对顶点介导的TDW操作的见解为优化具有定制磁性能的基于asi的自旋电子器件提供了一条途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Magnetics 工程技术-工程：电子与电气

CiteScore

4.00

自引率

14.30%

发文量

565

审稿时长

4.1 months

期刊介绍： Science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage. The IEEE Transactions on Magnetics publishes scholarly articles of archival value as well as tutorial expositions and critical reviews of classical subjects and topics of current interest.