Optimizing propagating spin wave spectroscopy

Juriaan Lucassen

doi:10.1063/1.5090892

2019-07-02

DOI：10.1063/1.5090892

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摘要

En 中文

The frequency difference between two oppositely propagating spin waves can be used to probe several interesting magnetic properties, such as the Dzyaloshinskii-Moriya interaction (DMI). Propagating spin wave spectroscopy is a technique that is very sensitive to this frequency difference. Here, we show several elements that are important to optimize devices for such a measurement. We demonstrate that for wide magnetic strips, there is a need for de-embedding. Additionally, for these wide strips, there is a large parasitic antenna-antenna coupling that obfuscates any spin wave transmission signal, which is remedied by moving to smaller strips. The conventional antenna design excites spin waves with two different wave vectors. As the magnetic layers become thinner, the resulting resonances move closer together and become very difficult to disentangle. In the last part, we therefore propose and verify an alternative antenna design that excites spin waves with only one wave vector. We suggest to use this antenna design to quantify the DMI in thin magnetic layers. Published under license by AIP Publishing.

Keyword:

DZYALOSHINSKII-MORIYA INTERACTION

FERROMAGNETIC-FILMS

EXCHANGE

AI总结

对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。

期刊

Applied Physics Letters

IF:

3.6

论文数:

10.4W

被引数:

17.8W

机构

Eindhoven University of Technology

学者数:

1.6W

论文数: 1.5W

被引数: 2.2W

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