The Dzyaloshinskii-Moriya interaction (DMI), one of the origins of chiral magnetism, is currently attracting considerable attention in the research community focusing on applied magnetism and spintronics. For future applications, an accurate measurement of its strength is indispensable. Here the state of the art of measurement techniques involving the coefficient of the Dzyaloshinskii-Moriya interaction, the DMI constant $D$, is reviewed, with a focus on systems where the interaction arises from the interface between two materials (i.e., the interfacial DMI). An overview of the experimental techniques, as well as their theoretical background and models for the quantification of the DMI constant, is given. The measurement techniques are divided into three categories: (a) domain-wall-based measurements, (b) spin-wave-based measurements, and (c) spin-orbit torque-based measurements. The advantages and disadvantages of each method are analyzed, and $D$ values at different interfaces are compared. The review aims to obtain a better understanding of the applicability of the different techniques to various stacks and of the origin of apparent disagreements among literature values.

中文翻译：

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测量超薄磁性薄膜中的界面 Dzyaloshinskii-Moriya 相互作用

Dzyaloshinskii-Moriya 相互作用（DMI）是手性磁学的起源之一，目前在应用磁学和自旋电子学研究界引起了广泛关注。对于未来的应用，对其强度的精确测量是必不可少的。这里是最先进的测量技术，涉及 Dzyaloshinskii-Moriya 相互作用的系数，即 DMI 常数$D$，进行了回顾，重点关注两种材料之间的界面（即界面 DMI）产生相互作用的系统。概述了实验技术及其理论背景和 DMI 常数量化模型。测量技术分为三类：（a）基于畴壁的测量，（b）基于自旋波的测量，以及（c）基于自旋轨道扭矩的测量。分析了每种方法的优缺点，$D$比较不同接口处的值。该评论旨在更好地理解不同技术对各种堆栈的适用性以及文献价值之间明显分歧的根源。