arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1702.02248cond-mat.mes-hall
收藏

铁磁导线中畴壁的湮灭

Annihilation of Domain Walls in a Ferromagnetic Wire

Anirban Ghosh, Kevin S. Huang, Oleg Tchernyshyov

摘要:

我们研究了在最简单的情况下:具有易磁化轴的一维铁磁体中拓扑孤子的湮灭。我们发展了一个有效的理论的湮灭过程中的四个集体坐标:两个零模式的平移和旋转对称性$Z$和$Φ$,代表的平均位置和方位角的两个孤子,和两个守恒动量$ζ$和$φ$,代表的相对距离和扭曲。与微磁模拟的比较表明,我们的方法很好地捕捉到的过程中的基本物理。

英文摘要:

We study the annihilation of topological solitons in the simplest setting: a one-dimensional ferromagnet with an easy axis. We develop an effective theory of the annihilation process in terms of four collective coordinates: two zero modes of the translational and rotational symmetries $Z$ and $Φ$, representing the average position and azimuthal angle of the two solitons, and two conserved momenta $ζ$ and $φ$, representing the relative distance and twist. Comparison with micromagnetic simulations shows that our approach captures well the essential physics of the process.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑