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

Soo Man Seo, Kyoung Jin Lee

Research output: Contribution to journalArticle

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 languageEnglish
Article number6027796
Pages (from-to)3085-3088
Number of pages4
JournalIEEE Transactions on Magnetics
Volume47
Issue number10
DOIs
Publication statusPublished - 2011 Oct 1

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Magnetic domains
Domain walls
Geometry
Current density
Torque
Magnetic fields

Keywords

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

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Magnetic domain wall oscillator with current-perpendicular-to-plane geometry. / Seo, Soo Man; Lee, Kyoung Jin.

In: IEEE Transactions on Magnetics, Vol. 47, No. 10, 6027796, 01.10.2011, p. 3085-3088.

Research output: Contribution to journalArticle

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