Chirality control of magnetic vortex in a square Py dot using current-induced Oersted field

S. Yakata, M. Miyata, S. Honda, H. Itoh, H. Wada, T. Kimura

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

We have proposed a method for controlling the vortex chirality in a squared permalloy dot by using the circular Oersted field locally induced by flowing a DC current across a small Py/Cu junctions. The reliability of the chirality control has been evaluated by measuring the nonlocal spin valve signal. The desired vortex chirality has been obtained when the injecting DC current has a moderate magnitude. However, the large DC current is found to reduce the control reliability. Another possibility for controlling the vortex structure using the large DC current injection was also discussed.

Original languageEnglish
Article number242507
JournalApplied Physics Letters
Volume99
Issue number24
DOIs
Publication statusPublished - Dec 12 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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