Thickness dependence of the interfacial Dzyaloshinskii-Moriya interaction in inversion symmetry broken systems

J. Cho, N.H. Kim, S. Lee, J.S. Kim, R. Lavrijsen, A.M.P. Solignac, Y. Yin, D. Han, N.J.J. Hoof, H.J.M. Swagten, B. Koopmans, C.-H. You

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Uittreksel

In magnetic multilayer systems, a large spin-orbit coupling at the interface between heavy metals and ferromagnets can lead to intriguing phenomena such as the perpendicular magnetic anisotropy, the spin Hall effect, the Rashba effect, and especially the interfacial Dzyaloshinskii–Moriya (IDM) interaction. This interfacial nature of the IDM interaction has been recently revisited because of its scientific and technological potential. Here we demonstrate an experimental technique to straightforwardly observe the IDM interaction, namely Brillouin light scattering. The non-reciprocal spin wave dispersions, systematically measured by Brillouin light scattering, allow not only the determination of the IDM energy densities beyond the regime of perpendicular magnetization but also the revelation of the inverse proportionality with the thickness of the magnetic layer, which is a clear signature of the interfacial nature. Altogether, our experimental and theoretical approaches involving double time Green’s function methods open up possibilities for exploring magnetic hybrid structures for engineering the IDM interaction.
Originele taal-2Engels
Pagina's (van-tot)7635-
Aantal pagina's7
TijdschriftNature Communications
Volume6
DOI's
StatusGepubliceerd - jul 2015

Vingerafdruk

Brillouin scattering
Light scattering
broken symmetry
Spin Hall effect
Magnetic multilayers
inversions
Light
Spin waves
Magnets
Magnetic anisotropy
Anisotropy
Orbit
Heavy Metals
Dispersions
Interfacial energy
Green's function
Magnetization
Orbits
light scattering
interactions

Citeer dit

Cho, J. ; Kim, N.H. ; Lee, S. ; Kim, J.S. ; Lavrijsen, R. ; Solignac, A.M.P. ; Yin, Y. ; Han, D. ; Hoof, N.J.J. ; Swagten, H.J.M. ; Koopmans, B. ; You, C.-H. / Thickness dependence of the interfacial Dzyaloshinskii-Moriya interaction in inversion symmetry broken systems. In: Nature Communications. 2015 ; Vol. 6. blz. 7635-.
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title = "Thickness dependence of the interfacial Dzyaloshinskii-Moriya interaction in inversion symmetry broken systems",
abstract = "In magnetic multilayer systems, a large spin-orbit coupling at the interface between heavy metals and ferromagnets can lead to intriguing phenomena such as the perpendicular magnetic anisotropy, the spin Hall effect, the Rashba effect, and especially the interfacial Dzyaloshinskii–Moriya (IDM) interaction. This interfacial nature of the IDM interaction has been recently revisited because of its scientific and technological potential. Here we demonstrate an experimental technique to straightforwardly observe the IDM interaction, namely Brillouin light scattering. The non-reciprocal spin wave dispersions, systematically measured by Brillouin light scattering, allow not only the determination of the IDM energy densities beyond the regime of perpendicular magnetization but also the revelation of the inverse proportionality with the thickness of the magnetic layer, which is a clear signature of the interfacial nature. Altogether, our experimental and theoretical approaches involving double time Green’s function methods open up possibilities for exploring magnetic hybrid structures for engineering the IDM interaction.",
author = "J. Cho and N.H. Kim and S. Lee and J.S. Kim and R. Lavrijsen and A.M.P. Solignac and Y. Yin and D. Han and N.J.J. Hoof and H.J.M. Swagten and B. Koopmans and C.-H. You",
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Thickness dependence of the interfacial Dzyaloshinskii-Moriya interaction in inversion symmetry broken systems. / Cho, J.; Kim, N.H.; Lee, S.; Kim, J.S.; Lavrijsen, R.; Solignac, A.M.P.; Yin, Y.; Han, D.; Hoof, N.J.J.; Swagten, H.J.M.; Koopmans, B.; You, C.-H.

In: Nature Communications, Vol. 6, 07.2015, blz. 7635-.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

T1 - Thickness dependence of the interfacial Dzyaloshinskii-Moriya interaction in inversion symmetry broken systems

AU - Cho, J.

AU - Kim, N.H.

AU - Lee, S.

AU - Kim, J.S.

AU - Lavrijsen, R.

AU - Solignac, A.M.P.

AU - Yin, Y.

AU - Han, D.

AU - Hoof, N.J.J.

AU - Swagten, H.J.M.

AU - Koopmans, B.

AU - You, C.-H.

PY - 2015/7

Y1 - 2015/7

N2 - In magnetic multilayer systems, a large spin-orbit coupling at the interface between heavy metals and ferromagnets can lead to intriguing phenomena such as the perpendicular magnetic anisotropy, the spin Hall effect, the Rashba effect, and especially the interfacial Dzyaloshinskii–Moriya (IDM) interaction. This interfacial nature of the IDM interaction has been recently revisited because of its scientific and technological potential. Here we demonstrate an experimental technique to straightforwardly observe the IDM interaction, namely Brillouin light scattering. The non-reciprocal spin wave dispersions, systematically measured by Brillouin light scattering, allow not only the determination of the IDM energy densities beyond the regime of perpendicular magnetization but also the revelation of the inverse proportionality with the thickness of the magnetic layer, which is a clear signature of the interfacial nature. Altogether, our experimental and theoretical approaches involving double time Green’s function methods open up possibilities for exploring magnetic hybrid structures for engineering the IDM interaction.

AB - In magnetic multilayer systems, a large spin-orbit coupling at the interface between heavy metals and ferromagnets can lead to intriguing phenomena such as the perpendicular magnetic anisotropy, the spin Hall effect, the Rashba effect, and especially the interfacial Dzyaloshinskii–Moriya (IDM) interaction. This interfacial nature of the IDM interaction has been recently revisited because of its scientific and technological potential. Here we demonstrate an experimental technique to straightforwardly observe the IDM interaction, namely Brillouin light scattering. The non-reciprocal spin wave dispersions, systematically measured by Brillouin light scattering, allow not only the determination of the IDM energy densities beyond the regime of perpendicular magnetization but also the revelation of the inverse proportionality with the thickness of the magnetic layer, which is a clear signature of the interfacial nature. Altogether, our experimental and theoretical approaches involving double time Green’s function methods open up possibilities for exploring magnetic hybrid structures for engineering the IDM interaction.

U2 - 10.1038/ncomms8635

DO - 10.1038/ncomms8635

M3 - Article

C2 - 26154986

VL - 6

SP - 7635-

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

ER -