在磁性三层膜中内在驱动非共轭层间交换耦合

IF 10 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Guan-Wei Peng , Hung-Chin Wang , Yu-Jie Zhong , Chao-Cheng Kaun , Ching-Hao Chang
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引用次数: 0

摘要

铁磁侧层夹着非磁性间隔层作为金属三层已成为实现自旋电子器件的关键平台。最近的实验证明,操纵导电间隔层的宽度或性质会诱发侧层之间的非共线磁排列。我们的理论分析表明,改变间隔层的宽度会显著影响层间交换耦合(IEC),从而导致非线性排列。通过分析和第一原理方法,我们对铁/银/铁三层的研究表明,在特定宽度的银间隔层上,侧层的磁矩趋于垂直。这种排列是由银量子阱态介导的,在三层上呈现出自旋螺旋。我们的研究结果表明,非共轭 IEC 为控制磁性器件和启动具有更强传输能力的自旋电子技术提供了自由度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Driving noncollinear interlayer exchange coupling intrinsically in magnetic trilayers

Driving noncollinear interlayer exchange coupling intrinsically in magnetic trilayers

Ferromagnetic side layers sandwiching a nonmagnetic spacer as a metallic trilayer has become a pivotal platform for achieving spintronic devices. Recent experiments demonstrate that manipulating the width or the nature of conducting spacer induces noncollinear magnetic alignment between the side layers. Our theoretical analysis reveals that altering the width of spacer significantly affects the interlayer exchange coupling (IEC), resulting in noncollinear alignment. Through analytic and first-principles methods, our study on the Fe/Ag/Fe trilayer shows that at a specific width of the Ag spacer, the magnetic moments of side layers tend to be perpendicular. This alignment is mediated by Ag quantum well states, exhibiting spin spirals across the trilayer. Our results reveal that the noncollinear IEC offers a degree of freedom to control magnetic devices and boot spintronic technology with improved transport capabilities.

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来源期刊
Materials Today Physics
Materials Today Physics Materials Science-General Materials Science
CiteScore
14.00
自引率
7.80%
发文量
284
审稿时长
15 days
期刊介绍: Materials Today Physics is a multi-disciplinary journal focused on the physics of materials, encompassing both the physical properties and materials synthesis. Operating at the interface of physics and materials science, this journal covers one of the largest and most dynamic fields within physical science. The forefront research in materials physics is driving advancements in new materials, uncovering new physics, and fostering novel applications at an unprecedented pace.
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