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

Soo Man Seo, Kyung Jin Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


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
Issue number10
Publication statusPublished - 2011 Oct

Bibliographical 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.


  • 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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