Probing the spin polarization of current by soft x-ray imaging of current-induced magnetic vortex dynamics [electronic resource].
- Berkeley, Calif. : Lawrence Berkeley National Laboratory, 2008.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 13 : digital, PDF file
- Additional Creators:
- Lawrence Berkeley National Laboratory
United States. Department of Energy. Office of Scientific and Technical Information
- Time-resolved soft X-ray transmission microscopy is applied to image the current-induced resonant dynamics of the magnetic vortex core realized in a micron-sized Permalloy disk. The high spatial resolution better than 25 nm enables us to observe the resonant motion of the vortex core. The result also provides the spin polarization of the current to be 0.67 ± 0.16 for Permalloy by fitting the experimental results with an analytical model in the framework of the spin-transfer torque.
- Published through SciTech Connect.
Physical Review Letters ISSN 0031-9007; PRLTAO FT
Fischer, Peter; Ono, Teruo; Kobayashi, Kensuke; Kohno, Hiroshi; Im, Mi-Young; Yamada, Keisuke; Nakatani, Yoshinobu; Kasai, Shinya.
Materials Sciences Division
- Funding Information:
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