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Determination of magnetic vortex chirality using lateral spin-valve geometry

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3 Author(s)
Kimura, T. ; Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan, Rikagaku Kenkyusho (RIKEN), Frontier Research System (FRS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan and Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Corporation (JST), Honcho 4-1-8, Kawaguchi, Saitama, 332-0012, Japan ; Otani, Y. ; Hamrle, J.

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We demonstrate the determination of the vortex chirality using a nonlocal spin-valve measurement technique in a lateral spin valve consisting of a Permalloy (Py) disk 1 μm in diameter and a Py wire 100 nm in width. The vortex chirality is determined under two probe configurations; the disk as the current probe and the disk as the voltage probe. The vortex chirality is found to depend on the probe configuration because of the current-induced Oersted field.

Published in:

Applied Physics Letters  (Volume:87 ,  Issue: 17 )

Date of Publication:

Oct 2005

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