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http://dx.doi.org/10.4283/JMAG.2010.15.4.149

Numerical Study on Current-Induced Switching of Synthetic Antiferromagnet  

Lee, Seo-Won (Department of Materials Science and Engineering, Korea University)
Lee, Kyung-Jin (Department of Materials Science and Engineering, Korea University)
Publication Information
Abstract
Synthetic antiferromagnets (SAFs) are used as free layer structures for various magnetic devices utilizing spintransfer torque (STT). Therefore, it is important to understand current-induced excitation of SAFs. By means of drift-diffusion and macrospin models, we studied the current-induced excitation of a SAF-free layer structure (NiFe/Ru/NiFe). The simulation results were compared with the previous experimental results [N. Smith et al., Phys. Rev. Lett. 101, 247205 (2008)]. We confirmed that a nonzero STT through the Ru layer is essential for explaining the experimental results.
Keywords
spin transfer torque; synthetic antiferromagnet;
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