Imaging and Tailoring the Chirality of Domain Walls in Magnetic Films,Advanced Materials

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Imaging and Tailoring the Chirality of Domain Walls in Magnetic Films
Advanced Materials ( IF 27.4 ) Pub Date : 2015-05-28 , DOI: 10.1002/adma.201500160
Gong Chen ₁ , Andreas K. Schmid ₁

Affiliation

Electric‐current‐induced magnetization switching is a keystone concept in the development of spintronics devices. In the last few years this field has experienced a significant boost with the discovery of ultrafast domain wall motions and very low threshold currents in structures designed to stabilize chiral spin textures. Imaging domain‐wall spin textures in situ, while fabricating magnetic multilayer structures, is a powerful way to investigate the forces stabilizing this type of chirality, and informs strategies to engineer structures with controlled spin textures. Here, recent results applying spin‐polarized low‐energy electron microscopy to image chiral domain walls in magnetic multilayer films are summarized. Providing a way to measure the strength of the asymmetric exchange interaction that causes the chirality, this approach can be used to tailor the texture and handedness of magnetic domain walls by interface engineering. These results advance understanding of the underlying physics and offer new insights toward the design of spintronic devices.

中文翻译：

磁性膜中畴壁的手性成像和定制

电流感应的磁化开关是自旋电子器件开发中的重要概念。在过去的几年中，随着超快畴壁运动的发现和用于稳定手性自旋结构的结构中极低的阈值电流的发现，该领域经历了巨大的发展。在制造磁性多层结构的同时，对磁畴壁自旋纹理进行原位成像是研究稳定这种手性的力的有力方法，并为设计具有可控自旋纹理的结构提供了策略。在此，总结了将自旋极化低能电子显微镜应用于磁性多层膜中手性畴壁图像的最新结果。提供一种方法来测量引起手性的不对称交换相互作用的强度，通过界面工程，该方法可用于调整磁畴壁的纹理和手感。这些结果提高了对基础物理学的理解，并为自旋电子器件的设计提供了新的见解。

更新日期：2015-05-28

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