All-Electrical Measurement of Interfacial Dzyaloshinskii-Moriya Interaction Using Collective Spin-Wave Dynamics

Jong Min Lee; Chaun Jang; Byoung Chul Min; Seo Won Lee; Kyung Jin Lee; Joonyeon Chang

doi:10.1021/acs.nanolett.5b02732

All-Electrical Measurement of Interfacial Dzyaloshinskii-Moriya Interaction Using Collective Spin-Wave Dynamics

Jong Min Lee, Chaun Jang, Byoung Chul Min, Seo Won Lee, Kyung Jin Lee, Joonyeon Chang

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

82 Citations (Scopus)

Abstract

(Graph Presented) Dzyaloshinskii-Moriya interaction (DMI), which arises from the broken inversion symmetry and spin-orbit coupling, is of prime interest as it leads to a stabilization of chiral magnetic order and provides an efficient manipulation of magnetic nanostructures. Here, we report all-electrical measurement of DMI using propagating spin wave spectroscopy based on the collective spin wave with a well-defined wave vector. We observe a substantial frequency shift of spin waves depending on the spin chirality in Pt/Co/MgO structures. After subtracting the contribution from other sources to the frequency shift, it is possible to quantify the DMI energy in Pt/Co/MgO systems. The result reveals that the DMI in Pt/Co/MgO originates from the interfaces, and the sign of DMI corresponds to the inversion asymmetry of the film structures. The electrical excitation and detection of spin waves and the influence of interfacial DMI on the collective spin-wave dynamics will pave the way to the emerging field of spin-wave logic devices.

Original language	English
Pages (from-to)	62-67
Number of pages	6
Journal	Nano Letters
Volume	16
Issue number	1
DOIs	https://doi.org/10.1021/acs.nanolett.5b02732
Publication status	Published - 2016 Jan 13

Keywords

Dzyaloshinskii-Moriya interaction
chiral magnet
magnetic thin film
propagating spin wave spectroscopy
spin wave
spintronics

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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10.1021/acs.nanolett.5b02732

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@article{f39ba27760074c8b81d9852796ffbd23,

title = "All-Electrical Measurement of Interfacial Dzyaloshinskii-Moriya Interaction Using Collective Spin-Wave Dynamics",

abstract = "(Graph Presented) Dzyaloshinskii-Moriya interaction (DMI), which arises from the broken inversion symmetry and spin-orbit coupling, is of prime interest as it leads to a stabilization of chiral magnetic order and provides an efficient manipulation of magnetic nanostructures. Here, we report all-electrical measurement of DMI using propagating spin wave spectroscopy based on the collective spin wave with a well-defined wave vector. We observe a substantial frequency shift of spin waves depending on the spin chirality in Pt/Co/MgO structures. After subtracting the contribution from other sources to the frequency shift, it is possible to quantify the DMI energy in Pt/Co/MgO systems. The result reveals that the DMI in Pt/Co/MgO originates from the interfaces, and the sign of DMI corresponds to the inversion asymmetry of the film structures. The electrical excitation and detection of spin waves and the influence of interfacial DMI on the collective spin-wave dynamics will pave the way to the emerging field of spin-wave logic devices.",

keywords = "Dzyaloshinskii-Moriya interaction, chiral magnet, magnetic thin film, propagating spin wave spectroscopy, spin wave, spintronics",

author = "Lee, {Jong Min} and Chaun Jang and Min, {Byoung Chul} and Lee, {Seo Won} and Lee, {Kyung Jin} and Joonyeon Chang",

note = "Funding Information: The authors acknowledge the technical assistance from Kun- Soo Song for the device fabrication at KIST. This work was supported by the KIST institutional program and the Pioneer Research Center Program of the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (2011-0027905). K.-J.L was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (NRF-2013R1A2A2A01013188, 2015M3D1A1070465). Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2016",

month = jan,

day = "13",

doi = "10.1021/acs.nanolett.5b02732",

language = "English",

volume = "16",

pages = "62--67",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "1",

}

TY - JOUR

T1 - All-Electrical Measurement of Interfacial Dzyaloshinskii-Moriya Interaction Using Collective Spin-Wave Dynamics

AU - Lee, Jong Min

AU - Jang, Chaun

AU - Min, Byoung Chul

AU - Lee, Seo Won

AU - Lee, Kyung Jin

AU - Chang, Joonyeon

N1 - Funding Information: The authors acknowledge the technical assistance from Kun- Soo Song for the device fabrication at KIST. This work was supported by the KIST institutional program and the Pioneer Research Center Program of the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (2011-0027905). K.-J.L was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (NRF-2013R1A2A2A01013188, 2015M3D1A1070465). Publisher Copyright: © 2015 American Chemical Society.

PY - 2016/1/13

Y1 - 2016/1/13

N2 - (Graph Presented) Dzyaloshinskii-Moriya interaction (DMI), which arises from the broken inversion symmetry and spin-orbit coupling, is of prime interest as it leads to a stabilization of chiral magnetic order and provides an efficient manipulation of magnetic nanostructures. Here, we report all-electrical measurement of DMI using propagating spin wave spectroscopy based on the collective spin wave with a well-defined wave vector. We observe a substantial frequency shift of spin waves depending on the spin chirality in Pt/Co/MgO structures. After subtracting the contribution from other sources to the frequency shift, it is possible to quantify the DMI energy in Pt/Co/MgO systems. The result reveals that the DMI in Pt/Co/MgO originates from the interfaces, and the sign of DMI corresponds to the inversion asymmetry of the film structures. The electrical excitation and detection of spin waves and the influence of interfacial DMI on the collective spin-wave dynamics will pave the way to the emerging field of spin-wave logic devices.

AB - (Graph Presented) Dzyaloshinskii-Moriya interaction (DMI), which arises from the broken inversion symmetry and spin-orbit coupling, is of prime interest as it leads to a stabilization of chiral magnetic order and provides an efficient manipulation of magnetic nanostructures. Here, we report all-electrical measurement of DMI using propagating spin wave spectroscopy based on the collective spin wave with a well-defined wave vector. We observe a substantial frequency shift of spin waves depending on the spin chirality in Pt/Co/MgO structures. After subtracting the contribution from other sources to the frequency shift, it is possible to quantify the DMI energy in Pt/Co/MgO systems. The result reveals that the DMI in Pt/Co/MgO originates from the interfaces, and the sign of DMI corresponds to the inversion asymmetry of the film structures. The electrical excitation and detection of spin waves and the influence of interfacial DMI on the collective spin-wave dynamics will pave the way to the emerging field of spin-wave logic devices.

KW - Dzyaloshinskii-Moriya interaction

KW - chiral magnet

KW - magnetic thin film

KW - propagating spin wave spectroscopy

KW - spin wave

KW - spintronics

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DO - 10.1021/acs.nanolett.5b02732

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JF - Nano Letters

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ER -

All-Electrical Measurement of Interfacial Dzyaloshinskii-Moriya Interaction Using Collective Spin-Wave Dynamics

Abstract

Keywords

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