Real-space observation of current-driven domain wall motion in submicron magnetic wires |
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Authors: | Yamaguchi A Ono T Nasu S Miyake K Mibu K Shinjo T |
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Institution: | Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan. |
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Abstract: | We report direct observation of current-driven magnetic domain wall (DW) displacement by using a well-defined single DW in a microfabricated magnetic wire with submicron width. Magnetic force microscopy visualizes that a single DW introduced in a wire is displaced back and forth by positive and negative pulsed current, respectively. The direct observation gives quantitative information on the DW displacement as a function of the intensity and the duration of the pulsed current. The result is discussed in terms of the spin-transfer mechanism. |
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