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Measuring interfacial Dzyaloshinskii-Moriya interaction in ultra-thin magnetic films

M. Kuepferling, A. Casiraghi, G. Soares, G. Durin

Istituto Nazionale di Ricerca Metrologica, Strada delle Cacce 91, 10135, Turin, Italy

F. Garcia-Sanchez

Dep. of Applied Physics, University of Salamanca, Plaza de los Caidos s/n 37008, Salamanca, Spain

L. Chen, C.H. Back

Technical University Munich, James-Frank-Str. 1, 85748 Garching, Germany

C.H. Marrows

School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom

S. Tacchi

CNR, Istituto Officina dei Materiali - Perugia, c/o Dipartimento di Fisica e Geologia\Università Perugia, Via A. Pascoli, 06123 Perugia, Italy}

G.Carlotti

Dipartimento di Fisica e Geologia, Università di Perugia, Via Pascoli, 06123 Perugia, Italy

The Dzyaloshinskii-Moriya interaction (DMI), being 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 we present a review of the state-of-the-art of measuring the coefficient of the Dzyaloshinskii-Moriya interaction, the DMI constant D, focusing on systems where the interaction arises from the interface between two materials (i.e. interfacial DMI). We give an overview of the experimental techniques as well as their theoretical background and models for the quantification of the DMI constant. 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. We analyze the advantages and disadvantages of each method and compare D values at different interfaces. 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.

Published on Review of Modern Physics, vol 95 Pre-print available on ArXiv

Install the notebook and you can use the electronic version of figs. 28 and 29 of the paper.

This notebook has many purposes:

  1. it generates the electronic version of figs. 28 and 29 of the paper, so you can hoove with the mouse over the bars to get info about the paper and the measurement.
  2. it outputs general statistics about available DMI data
  3. it offers the opportunity to keep the database available when new data are available (or have been missed)

Do you want to contribute to keep the DMI database updated?

Please write to g.durin at inrim.it for adding new data, or open an issue

Notes on installation

Running this notebook in JupyterLab or as old Notebook should give an error when a package is not installed. Simply "pip install package" and restart the kernel

In case you receive the message "RuntimeError: node.js v14.0.0 or higher is needed to allow compilation of custom models ("conda install nodejs" or follow https://nodejs.org/en/download/)" please follow the https://nodejs.org/en/download link and install node.js for your distribution.