2000 character limit reached
Hopfions in chiral magnets (1806.06458v2)
Published 17 Jun 2018 in cond-mat.mes-hall, cond-mat.mtrl-sci, and hep-th
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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