Study of Surface Character of Micrometer-Scale Dipole-Exchange Spin Waves in an Yttrium Iron Garnet Film

Jinho Lim; Wonbae Bang; Jonathan Trossman; Andreas Kreisel; Matthias Benjamin Jungfleisch; Axel Hoffmann; C. C. Tsai; John B. Ketterson

doi:10.1109/TMAG.2018.2864917

Study of Surface Character of Micrometer-Scale Dipole-Exchange Spin Waves in an Yttrium Iron Garnet Film

Jinho Lim^*, Wonbae Bang, Jonathan Trossman, Andreas Kreisel, Matthias Benjamin Jungfleisch, Axel Hoffmann, C. C. Tsai, John B. Ketterson

^*Corresponding author for this work

Physics and Astronomy

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

2 Scopus citations

Abstract

We demonstrate that micrometer-scale spin waves can be excited in a thin film of the ferrimagnetic material yttrium iron garnet (YIG) using patterned, multi-element antennas. The magnitude of the dynamic magnetic field generated by such antennas decays exponentially along the thickness direction, and this leads to an enhanced coupling to modes having a surface-like character as opposed to a more sinusoidal bulk-like character. We have used this property to identify spin waves having a mixed bulk/surface character.

Original language	English (US)
Article number	8457497
Journal	Ieee Transactions on Magnetics
Volume	55
Issue number	2
DOIs	https://doi.org/10.1109/TMAG.2018.2864917
State	Published - Feb 2019

Keywords

Dipole-exchange spin wave
hybridization
multi-element antenna
surface mode

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2018.2864917

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title = "Study of Surface Character of Micrometer-Scale Dipole-Exchange Spin Waves in an Yttrium Iron Garnet Film",

abstract = "We demonstrate that micrometer-scale spin waves can be excited in a thin film of the ferrimagnetic material yttrium iron garnet (YIG) using patterned, multi-element antennas. The magnitude of the dynamic magnetic field generated by such antennas decays exponentially along the thickness direction, and this leads to an enhanced coupling to modes having a surface-like character as opposed to a more sinusoidal bulk-like character. We have used this property to identify spin waves having a mixed bulk/surface character.",

keywords = "Dipole-exchange spin wave, hybridization, multi-element antenna, surface mode",

author = "Jinho Lim and Wonbae Bang and Jonathan Trossman and Andreas Kreisel and Jungfleisch, {Matthias Benjamin} and Axel Hoffmann and Tsai, {C. C.} and Ketterson, {John B.}",

note = "Publisher Copyright: {\textcopyright} 1965-2012 IEEE.",

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T1 - Study of Surface Character of Micrometer-Scale Dipole-Exchange Spin Waves in an Yttrium Iron Garnet Film

AU - Lim, Jinho

AU - Bang, Wonbae

AU - Trossman, Jonathan

AU - Kreisel, Andreas

AU - Jungfleisch, Matthias Benjamin

AU - Hoffmann, Axel

AU - Tsai, C. C.

AU - Ketterson, John B.

PY - 2019/2

Y1 - 2019/2

N2 - We demonstrate that micrometer-scale spin waves can be excited in a thin film of the ferrimagnetic material yttrium iron garnet (YIG) using patterned, multi-element antennas. The magnitude of the dynamic magnetic field generated by such antennas decays exponentially along the thickness direction, and this leads to an enhanced coupling to modes having a surface-like character as opposed to a more sinusoidal bulk-like character. We have used this property to identify spin waves having a mixed bulk/surface character.

AB - We demonstrate that micrometer-scale spin waves can be excited in a thin film of the ferrimagnetic material yttrium iron garnet (YIG) using patterned, multi-element antennas. The magnitude of the dynamic magnetic field generated by such antennas decays exponentially along the thickness direction, and this leads to an enhanced coupling to modes having a surface-like character as opposed to a more sinusoidal bulk-like character. We have used this property to identify spin waves having a mixed bulk/surface character.

KW - Dipole-exchange spin wave

KW - hybridization

KW - multi-element antenna

KW - surface mode

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Study of Surface Character of Micrometer-Scale Dipole-Exchange Spin Waves in an Yttrium Iron Garnet Film

Abstract

Keywords

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