Current Applied Physics

Korean Physical Society (한국물리학회)
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Current-induced oscillation of a magnetic domain wall: Effect of damping enhanced by magnetization dynamics

Kim, Sang-Il;Moon, Jung-Hwan;Kim, Woojin;Lee, Kyung-Jin

  • Published : 20110100
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Abstract

Based on the Thiele's approach, we investigate current-induced oscillation of a magnetic domain wall. A special attention is paid to effect of damping enhancement due to magnetization dynamics in the limit of no spin diffusion. Unlike for a translation motion, the enhanced damping due to magnetization dynamics has an important role for a rotational motion of a magnetic domain wall and can significantly reduce its oscillation frequency. The frequency reduction becomes more substantial for a narrower domain wall. This result provides a design strategy of high-frequency devices utilizing domain wall oscillation.

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References

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