Optimizing propagating spin wave spectroscopy

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The frequency difference between two oppositely propagating spin waves can be used to probe several interesting magnetic properties, such as the Dzyaloshinkii-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 a new antenna design that excites spin waves with only one wave vector. We suggest to use this antenna design to measure the DMI in thin magnetic layers.
Originele taal-2Engels
Artikelnummer1901.11108v1
Aantal pagina's12
TijdschriftarXiv
StatusGepubliceerd - 30 jan 2019

Vingerafdruk

magnons
antenna design
strip
spectroscopy
signal transmission
embedding
antennas
interactions
magnetic properties
probes

Citeer dit

@article{0f93e5a845604114918a2c85b483df64,
title = "Optimizing propagating spin wave spectroscopy",
abstract = "The frequency difference between two oppositely propagating spin waves can be used to probe several interesting magnetic properties, such as the Dzyaloshinkii-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 a new antenna design that excites spin waves with only one wave vector. We suggest to use this antenna design to measure the DMI in thin magnetic layers.",
keywords = "cond-mat.mtrl-sci, cond-mat.mes-hall",
author = "Juriaan Lucassen and Schippers, {Casper F.} and Luuk Rutten and Duine, {Rembert A.} and Swagten, {Henk J. M.} and Bert Koopmans and Reinoud Lavrijsen",
year = "2019",
month = "1",
day = "30",
language = "English",
journal = "arXiv",
publisher = "Cornell University Library",

}

Optimizing propagating spin wave spectroscopy. / Lucassen, Juriaan; Schippers, Casper F.; Rutten, Luuk; Duine, Rembert A.; Swagten, Henk J. M.; Koopmans, Bert; Lavrijsen, Reinoud.

In: arXiv, 30.01.2019.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademic

TY - JOUR

T1 - Optimizing propagating spin wave spectroscopy

AU - Lucassen, Juriaan

AU - Schippers, Casper F.

AU - Rutten, Luuk

AU - Duine, Rembert A.

AU - Swagten, Henk J. M.

AU - Koopmans, Bert

AU - Lavrijsen, Reinoud

PY - 2019/1/30

Y1 - 2019/1/30

N2 - The frequency difference between two oppositely propagating spin waves can be used to probe several interesting magnetic properties, such as the Dzyaloshinkii-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 a new antenna design that excites spin waves with only one wave vector. We suggest to use this antenna design to measure the DMI in thin magnetic layers.

AB - The frequency difference between two oppositely propagating spin waves can be used to probe several interesting magnetic properties, such as the Dzyaloshinkii-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 a new antenna design that excites spin waves with only one wave vector. We suggest to use this antenna design to measure the DMI in thin magnetic layers.

KW - cond-mat.mtrl-sci

KW - cond-mat.mes-hall

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