Enhanced switching current density due to resonant precession in current-induced magnetization switching

Woojin Kim, Taek Dong Lee, Jang Eun Lee, Se Chung Oh, Kyung Ho Shin, Hong Ju Suh, Kyung Jin Lee

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Micromagnetic investigation was performed on the influence of neighboring cells in a conventional rectangular array to the switching current density (Jc) in the current-induced magnetization switching. We found that the Jc was increased regardless of the relative switching direction to the overall stray field. It is because the precession of the magnetization in the switching cell induces a resonant precession in neighboring cells through magnetostatic interaction. The resonant precession disturbs a fast reversal and results in the enhanced Jc for a fixed pulse width. The enhancement increases as the distance between the cells decreases. Here we proposed a zigzag array which significantly suppresses the enhancement of Jc due to the resonant precession.

Original languageEnglish
Article number212504
JournalApplied Physics Letters
Volume90
Issue number21
DOIs
Publication statusPublished - 2007

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) through the National Research Laboratory Program funded by the Ministry of Science and Technology (No. M10600000198-06J0000-19810). The authors would like to acknowledge the support from KISTI (Korea Institute of Science and Technology Information) under The Strategic Supercomputing Support Program with Dr. Sik Lee as the technical supporter. The use of the computing system of the Supercomputing Center is also greatly appreciated. This work was partly supported by the TND Frontier Project funded by KISTEP.

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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