Current-induced oscillation of a magnetic domain wall: Effect of damping enhanced by magnetization dynamics
Current-induced oscillation of a magnetic domain wall: Effect of damping enhanced by magnetization dynamics
- 주제(키워드) Spintronics , Spin motive force , Domain wall oscillation , Thiele’s equation , Micromagnetic simulation
- 발행기관 한국물리학회
- 발행년도 2011
- 총서유형 Journal
- UCI G704-001115.2011.11.1.015
- KCI ID ART001520908
- 본문언어 영어
초록/요약
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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