Hopfions in chiral magnets

被引：97

作者：

Sutcliffe, Paul ^{[1
]}

机构：

[1] Univ Durham, Dept Math Sci, Durham DH1 3LE, England

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2018年 / 51卷 / 37期

关键词：

Hopfion; Skyrmion; chiral magnets; CLASSICAL FIELD-THEORY; KNOTS; SOLITONS; MODEL;

D O I：

10.1088/1751-8121/aad521

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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.

引用

页数：9

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