Magnetic domain wall oscillator with current-perpendicular-to-plane geometry

Soo Man Seo; Kyung Jin Lee

doi:10.1109/TMAG.2011.2158398

Magnetic domain wall oscillator with current-perpendicular-to-plane geometry

Soo Man Seo, Kyung Jin Lee

Department of Materials Science and Engineering

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

1 Citation (Scopus)

Abstract

By means of analytical 1-D model and full micromagnetic simulation, we investigated the magnetic domain wall (DW) oscillator with current- perpendicular-to-plane geometry. We found that the DW oscillation frequency linearly increases with the applying current density, but drops above a certain threshold. This frequency drop is caused by the deformation of DW due to spin-transfer torque. We found that by applying an external perpendicular magnetic field in addition to the current, this deformation and the frequency drop can be suppressed, which allows obtaining a reliable frequency range for the device application.

Original language	English
Article number	6027796
Pages (from-to)	3085-3088
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	47
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2011.2158398
Publication status	Published - 2011 Oct

Keywords

Current-perpendicular-to-plane (CPP) geometry
magnetic domain wall (DW)
micromagnetic simulation
spin-transfer torque (STT)

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2011.2158398

Cite this

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title = "Magnetic domain wall oscillator with current-perpendicular-to-plane geometry",

abstract = "By means of analytical 1-D model and full micromagnetic simulation, we investigated the magnetic domain wall (DW) oscillator with current- perpendicular-to-plane geometry. We found that the DW oscillation frequency linearly increases with the applying current density, but drops above a certain threshold. This frequency drop is caused by the deformation of DW due to spin-transfer torque. We found that by applying an external perpendicular magnetic field in addition to the current, this deformation and the frequency drop can be suppressed, which allows obtaining a reliable frequency range for the device application.",

keywords = "Current-perpendicular-to-plane (CPP) geometry, magnetic domain wall (DW), micromagnetic simulation, spin-transfer torque (STT)",

author = "Seo, {Soo Man} and Lee, {Kyung Jin}",

note = "Funding Information: This work was supported in part by the IT R&D program of MKE/KEIT under Grant 2009-F-004-01 and the Korea Science and Engineering Foundation (KOSEF) through the basic research program funded by the Ministry of Science and Technology, Korea, under Contract 2010-0023798.",

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doi = "10.1109/TMAG.2011.2158398",

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N2 - By means of analytical 1-D model and full micromagnetic simulation, we investigated the magnetic domain wall (DW) oscillator with current- perpendicular-to-plane geometry. We found that the DW oscillation frequency linearly increases with the applying current density, but drops above a certain threshold. This frequency drop is caused by the deformation of DW due to spin-transfer torque. We found that by applying an external perpendicular magnetic field in addition to the current, this deformation and the frequency drop can be suppressed, which allows obtaining a reliable frequency range for the device application.

AB - By means of analytical 1-D model and full micromagnetic simulation, we investigated the magnetic domain wall (DW) oscillator with current- perpendicular-to-plane geometry. We found that the DW oscillation frequency linearly increases with the applying current density, but drops above a certain threshold. This frequency drop is caused by the deformation of DW due to spin-transfer torque. We found that by applying an external perpendicular magnetic field in addition to the current, this deformation and the frequency drop can be suppressed, which allows obtaining a reliable frequency range for the device application.

KW - Current-perpendicular-to-plane (CPP) geometry

KW - magnetic domain wall (DW)

KW - micromagnetic simulation

KW - spin-transfer torque (STT)

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JF - IEEE Transactions on Magnetics

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ER -

Magnetic domain wall oscillator with current-perpendicular-to-plane geometry

Abstract

Keywords

ASJC Scopus subject areas

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