APS -2017 Annual Meeting of the APS Mid-Atlantic Section- Event - Mechanics of magnetic solitons

Oleg Tchernyshyov

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APS -2017 Annual Meeting of the APS Mid-Atlantic Section- Event - Mechanics of magnetic solitons

机译：APS -2017年APS中大西洋分会年会-活动-磁孤子力学

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Magnets host a variety of solitons that are stable for topological reasons: domain walls, vortices, and skyrmions, to name a few. Because of their stability, topological solitons can potentially be used for storing and processing information. This motivates us to build economic, yet realistic models of soliton dynamics in magnets. E.g., a domain wall in a cylindrical ferromagnetic wire can be pictured as a bead on a string, which can move along the string and rotate about its axis. Its mechanics is counterintuitive: it rotates when pushed and moves when twisted. Attempts to define the linear momentum of a topological soliton often yield paradoxical results. I will review basic models of ferro- and antiferromagnetic domain walls in one dimension and give examples from higher dimensions.

机译：磁铁承载着多种由于拓扑原因而稳定的孤子：磁畴壁，涡旋和天体，仅举几例。由于其稳定性，拓扑孤子可以潜在地用于存储和处理信息。这激励我们建立磁体中孤子动力学的经济但现实的模型。例如，圆柱形铁磁线中的磁畴壁可以显示为弦上的磁珠，磁珠可以沿着弦移动并绕其轴线旋转。它的机制与直觉相反：它在推动时旋转，在扭曲时移动。试图定义拓扑孤子的线性动量通常会产生矛盾的结果。我将在一个维度上回顾铁磁和反铁磁畴壁的基本模型，并从更高的维度给出示例。

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《Bulletin of the American Physical Society》 |2017年第19期|共页
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Oleg Tchernyshyov;
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APS -2017 Annual Meeting of the APS Mid-Atlantic Section- Event - Mechanics of magnetic solitons

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