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http://dx.doi.org/10.4283/JMAG.2011.16.2.092

Spin Transfer Torque in Ferromagnet-Normal Metal-Antiferromagnet Junctions  

Lee, Hyun-Woo (PCTP and Department of Physics, Pohang University of Science and Technology)
Yang, Hyun-Soo (Department of Electrical and Computer Engineering, National University of Singapore)
Publication Information
Journal of Magnetics / v.16, no.2, 2011 , pp. 92-96 More about this Journal
Abstract
This study investigated theoretically the properties of the spin transfer torque acting on a ferromagnet in a ferromagnet-normal metal-antiferromagnet junction. Earlier work showed that the angular dependence of the spin transfer torque can be a wavy-type if the junction satisfies a special symmetry. This paper reports a simple model analysis that allows a derivation of the wavy angular dependence without taking advantage of the symmetry. This result suggests that the wavy angular dependence can appear even when the symmetry is broken. As an illustration, the angular dependence was calculated as a function of the degree of the compensation at the normal metal-antiferromagnet interface. The implications of the result for the current-induced magnetization precession are discussed.
Keywords
spin transfer torque; antiferromagnet; microwave generation; current-induced magnetization precession;
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Times Cited By Web Of Science : 0  (Related Records In Web of Science)
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