Extraction of Dzyaloshinksii-Moriya interaction from propagating spin waves validated

Juriaan Lucassen, Casper F. Schippers, Marcel A. Verheijen, Patrizia Fritsch, Erik Jan Geluk, Beatriz Barcones, Rembert A. Duine, Sabine Wurmehl, Henk J. M. Swagten, Bert Koopmans, Reinoud Lavrijsen

Research output: Contribution to journalArticleAcademic

Abstract

The interfacial Dzyaloshinksii-Moriya interaction (iDMI) is of great interest in thin-film magnetism because of its ability to stabilize chiral spin textures. It can be quantified by investigating the frequency non-reciprocity of oppositely propagating spin waves. However, as the iDMI is an interface interaction the relative effect reduces when the films become thicker making quantification more difficult. Here, we utilize all-electrical Propagating Spin Wave Spectroscopy (PSWS) to disentangle multiple contributions to spin wave frequency non-reciprocity to determine the iDMI. This is done by investigating non-reciprocities across a wide range of magnetic layer thicknesses (from 4 to 26 nm) in Pt/Co/Ir, Pt/Co/Pt, and Ir/Co/Pt stacks. We find the expected sign change in the iDMI when inverting the stack order, and a negligible iDMI for the symmetric Pt/Co/Pt. We additionally extract a difference in surface anisotropies and find a large contribution due to the formation of different crystalline phases of the Co, which is corroborated using nuclear magnetic resonance and high-resolution transmission-electron-microscopy measurements. These insights will open up new avenues to investigate, quantify and disentangle the fundamental mechanisms governing the iDMI, and pave a way towards engineered large spin-wave non-reciprocities for magnonic applications.
LanguageEnglish
Article number1909.02467v1
Number of pages26
JournalarXiv
StatePublished - 5 Sep 2019

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magnons
interactions
thick films
textures
nuclear magnetic resonance
transmission electron microscopy
anisotropy
high resolution
thin films
spectroscopy

Bibliographical note

12 pages, 2 figures

Keywords

  • cond-mat.mtrl-sci
  • cond-mat.mes-hall

Cite this

@article{b90b56043bd545d3a98145190cd15cb4,
title = "Extraction of Dzyaloshinksii-Moriya interaction from propagating spin waves validated",
abstract = "The interfacial Dzyaloshinksii-Moriya interaction (iDMI) is of great interest in thin-film magnetism because of its ability to stabilize chiral spin textures. It can be quantified by investigating the frequency non-reciprocity of oppositely propagating spin waves. However, as the iDMI is an interface interaction the relative effect reduces when the films become thicker making quantification more difficult. Here, we utilize all-electrical Propagating Spin Wave Spectroscopy (PSWS) to disentangle multiple contributions to spin wave frequency non-reciprocity to determine the iDMI. This is done by investigating non-reciprocities across a wide range of magnetic layer thicknesses (from 4 to 26 nm) in Pt/Co/Ir, Pt/Co/Pt, and Ir/Co/Pt stacks. We find the expected sign change in the iDMI when inverting the stack order, and a negligible iDMI for the symmetric Pt/Co/Pt. We additionally extract a difference in surface anisotropies and find a large contribution due to the formation of different crystalline phases of the Co, which is corroborated using nuclear magnetic resonance and high-resolution transmission-electron-microscopy measurements. These insights will open up new avenues to investigate, quantify and disentangle the fundamental mechanisms governing the iDMI, and pave a way towards engineered large spin-wave non-reciprocities for magnonic applications.",
keywords = "cond-mat.mtrl-sci, cond-mat.mes-hall",
author = "Juriaan Lucassen and Schippers, {Casper F.} and Verheijen, {Marcel A.} and Patrizia Fritsch and Geluk, {Erik Jan} and Beatriz Barcones and Duine, {Rembert A.} and Sabine Wurmehl and Swagten, {Henk J. M.} and Bert Koopmans and Reinoud Lavrijsen",
note = "12 pages, 2 figures",
year = "2019",
month = "9",
day = "5",
language = "English",
journal = "arXiv",
publisher = "Cornell University Library",

}

Extraction of Dzyaloshinksii-Moriya interaction from propagating spin waves validated. / Lucassen, Juriaan; Schippers, Casper F.; Verheijen, Marcel A.; Fritsch, Patrizia; Geluk, Erik Jan; Barcones, Beatriz; Duine, Rembert A.; Wurmehl, Sabine; Swagten, Henk J. M.; Koopmans, Bert; Lavrijsen, Reinoud.

In: arXiv, 05.09.2019.

Research output: Contribution to journalArticleAcademic

TY - JOUR

T1 - Extraction of Dzyaloshinksii-Moriya interaction from propagating spin waves validated

AU - Lucassen,Juriaan

AU - Schippers,Casper F.

AU - Verheijen,Marcel A.

AU - Fritsch,Patrizia

AU - Geluk,Erik Jan

AU - Barcones,Beatriz

AU - Duine,Rembert A.

AU - Wurmehl,Sabine

AU - Swagten,Henk J. M.

AU - Koopmans,Bert

AU - Lavrijsen,Reinoud

N1 - 12 pages, 2 figures

PY - 2019/9/5

Y1 - 2019/9/5

N2 - The interfacial Dzyaloshinksii-Moriya interaction (iDMI) is of great interest in thin-film magnetism because of its ability to stabilize chiral spin textures. It can be quantified by investigating the frequency non-reciprocity of oppositely propagating spin waves. However, as the iDMI is an interface interaction the relative effect reduces when the films become thicker making quantification more difficult. Here, we utilize all-electrical Propagating Spin Wave Spectroscopy (PSWS) to disentangle multiple contributions to spin wave frequency non-reciprocity to determine the iDMI. This is done by investigating non-reciprocities across a wide range of magnetic layer thicknesses (from 4 to 26 nm) in Pt/Co/Ir, Pt/Co/Pt, and Ir/Co/Pt stacks. We find the expected sign change in the iDMI when inverting the stack order, and a negligible iDMI for the symmetric Pt/Co/Pt. We additionally extract a difference in surface anisotropies and find a large contribution due to the formation of different crystalline phases of the Co, which is corroborated using nuclear magnetic resonance and high-resolution transmission-electron-microscopy measurements. These insights will open up new avenues to investigate, quantify and disentangle the fundamental mechanisms governing the iDMI, and pave a way towards engineered large spin-wave non-reciprocities for magnonic applications.

AB - The interfacial Dzyaloshinksii-Moriya interaction (iDMI) is of great interest in thin-film magnetism because of its ability to stabilize chiral spin textures. It can be quantified by investigating the frequency non-reciprocity of oppositely propagating spin waves. However, as the iDMI is an interface interaction the relative effect reduces when the films become thicker making quantification more difficult. Here, we utilize all-electrical Propagating Spin Wave Spectroscopy (PSWS) to disentangle multiple contributions to spin wave frequency non-reciprocity to determine the iDMI. This is done by investigating non-reciprocities across a wide range of magnetic layer thicknesses (from 4 to 26 nm) in Pt/Co/Ir, Pt/Co/Pt, and Ir/Co/Pt stacks. We find the expected sign change in the iDMI when inverting the stack order, and a negligible iDMI for the symmetric Pt/Co/Pt. We additionally extract a difference in surface anisotropies and find a large contribution due to the formation of different crystalline phases of the Co, which is corroborated using nuclear magnetic resonance and high-resolution transmission-electron-microscopy measurements. These insights will open up new avenues to investigate, quantify and disentangle the fundamental mechanisms governing the iDMI, and pave a way towards engineered large spin-wave non-reciprocities for magnonic applications.

KW - cond-mat.mtrl-sci

KW - cond-mat.mes-hall

UR - https://arxiv.org/abs/1909.02467

M3 - Article

JO - arXiv

T2 - arXiv

JF - arXiv

M1 - 1909.02467v1

ER -