Detection of current-driven magnetic domain wall deformation using anisotropic magnetoresistance effect
✍ Scribed by Maekawa, H. ;Nozaki, T. ;Kasai, S. ;Mizuguchi, M. ;Shiraishi, M. ;Ono, T. ;Suzuki, Y.
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 279 KB
- Volume
- 204
- Category
- Article
- ISSN
- 0031-8965
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✦ Synopsis
Abstract
We report on an electrical detection of current driven domain wall (DW) deformation induced by a current pulse injection in arc‐shaped permalloy (Py) submicron wires. Current polarity and pulse length dependence were investigated under an assisting external magnetic field. Initial DW states prepared by an application of a large magnetic field were distributed to two distinct DW states. A current pulse application promoted transition between them. In addition, the third DW state was established only by an application of the short pulses (<50 ns). This result suggests the possibility of the high‐speed control of the DW dynamics. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)