Full voltage control of giant magnetoresistance

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-12-23 DOI:10.1063/5.0246117

Lujun Wei, Yiyang Zhang, Fei Huang, Wei Niu, Feng Li, Jiaju Yang, Jincheng Peng, Yanghui Li, Yu Lu, Jiarui Chen, Weihao Wang, Tianyu Liu, Yong Pu, Jun Du

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引用次数: 0

Abstract

The aim of voltage control of magnetism is to reduce the power consumption of spintronic devices. For a spin valve, the relative magnetic orientation for the two ferromagnetic layers is a key factor determining the giant magnetoresistance (GMR) ratio. However, achieving full voltage manipulation of the magnetization directions between parallel and antiparallel states is a significant challenge. Here, we demonstrate that by utilizing two exchange-biased Co/IrMn bilayers with opposite pinning directions and with ferromagnetic interlayer coupling between the two Co layers, the magnetization alignment of the two Co layers of a spin valve can be switched between antiparallel and nearly parallel states by voltage-induced strain, leading to a full voltage control of GMR in a repeatable manner. The magnetization rotating processes for the two Co layers under different voltages can be clearly demonstrated by simulations based on the Landau–Lifshitz–Gilbert equation. This work provides valuable references for the development of full voltage-controlled spintronic devices with low energy consumption.

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巨磁电阻全电压控制

磁电压控制的目的是为了降低自旋电子器件的功耗。对于自旋阀，两铁磁层的相对磁取向是决定其巨磁电阻比的关键因素。然而，实现在平行和反平行状态之间的磁化方向的全电压操纵是一个重大挑战。在这里，我们证明了利用两个交换偏置的Co/IrMn双分子层具有相反的钉钉方向和两个Co层之间的铁磁层间耦合，可以通过电压诱导应变在反平行和近平行状态之间切换自旋阀的两个Co层的磁化排列，从而以可重复的方式实现GMR的完全电压控制。基于Landau-Lifshitz-Gilbert方程的模拟可以清楚地证明两层钴在不同电压下的磁化旋转过程。本工作为研制低能耗的全压控自旋电子器件提供了有价值的参考。

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.