Hopfions in chiral magnets

Paul Sutcliffe

doi:10.1088/1751-8121/aad521

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arXiv · 1806.06458

Hopfions in chiral magnets

Paul Sutcliffe

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Abstract

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.

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Paul Sutcliffe. 2018-06-17. Hopfions in chiral magnets. https://doi.org/10.1088/1751-8121/aad521

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