Engineering magnetic chirality in FeGe nanocylinders: Exploring topological states for spintronic applications

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-12-23 DOI:10.1063/5.0227594

Eduardo Saavedra, Lucy A. Valdez, Pablo Díaz, Noelia Bajales, Juan Escrig

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引用次数: 0

Abstract

Iron germanide (FeGe) emerges as a promising magnetic alloy for spintronics and high-density data storage, owing to its distinctive magnetic properties and compatibility with existing fabrication techniques. This compatibility enables the synthesis of customized FeGe nanocylinders characterized by chirality, where their magnetization asymmetrically twists. Within specific size parameters, these nanocylinders can accommodate skyrmions—swirling magnetic structures with significant implications for information storage and processing technologies. This study investigates the response of FeGe nanocylinders to external magnetic fields, focusing on how their magnetic properties vary with dimensions (diameter and length). Specifically, we analyze the impact of length on the pseudo-static properties of short FeGe nanocylinders and examine the average topological charge and remanence states across different aspect ratios. Our investigation underscores the relationship between chirality and diverse magnetization states in four types of nanocylinders with varying aspect ratios. This comprehensive analysis elucidates the connection between nanocylinder magnetic states and the average topological charge—a critical factor in advancing ultra-low-energy data storage and logic devices.

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FeGe纳米圆柱体的工程磁手性：探索自旋电子应用的拓扑状态

由于其独特的磁性和与现有制造技术的兼容性，锗化铁（FeGe）成为自旋电子学和高密度数据存储的有前途的磁性合金。这种相容性使得可以合成具有手性的定制FeGe纳米柱，其磁化不对称地扭曲。在特定的尺寸参数下，这些纳米圆柱体可以容纳天幕旋转磁结构，对信息存储和处理技术具有重要意义。本研究考察了FeGe纳米柱对外部磁场的响应，重点研究了其磁性能随尺寸（直径和长度）的变化。具体来说，我们分析了长度对短FeGe纳米柱伪静态性能的影响，并研究了不同宽高比下的平均拓扑电荷和剩余状态。我们的研究强调了四种不同宽高比纳米柱的手性与不同磁化状态之间的关系。这项综合分析阐明了纳米圆柱体磁态与平均拓扑电荷之间的联系，这是推进超低能量数据存储和逻辑器件的关键因素。

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

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.