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arXiv 1806.06458cond-mat.mes-hallcond-mat.mtrl-scihep-th
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手征磁体中的Hopfions

Hopfions in chiral magnets

Paul Sutcliffe

摘要:

磁Hopfion是一种三维拓扑孤子,它由一个闭合的扭曲磁Skyrmion弦环组成。数值模拟的结果表明,存在一个稳定的Hopfion在纳米圆柱的手征磁体和显式的解析表达式,提供了一个合理的近似数值计算的Hopfion。提出了一种通过引入界面垂直磁各向异性从目标Skyrmion产生Hopfion的机制。

英文摘要:

A magnetic Hopfion is a three-dimensional topological soliton that consists of a closed loop of a twisted magnetic Skyrmion string. The results of numerical simulations are presented that demonstrate the existence of a stable Hopfion in a nanocylinder of a chiral magnet and an explicit analytic expression is shown to provide a reasonable approximation to the numerically computed Hopfion. A mechanism is suggested to create the Hopfion from a target Skyrmion by introducing an interfacial perpendicular magnetic anisotropy.

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。

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