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Durham University

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Publication details for Paul Sutcliffe

Sutcliffe, Paul (2018). Hopfions in chiral magnets. Journal of Physics A: Mathematical and Theoretical 51(37): 375401.

Author(s) from Durham

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.