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Magnetism and spin

Magnetism and spin

Hopfions seen in a magnetic crystal

17 Jan 2024 Isabelle Dumé
Diagram showing the directions of magnetic spins in a hopfion ring. Multicoloured arrows represent spins, and their direction rotates both around the ring's bulk and along its circumference
Diagram showing the directions of magnetic spins in a hopfion ring. These hopfions can form coupled states with strings of skyrmions in plates cut from a single crystal of iron germanide. (Courtesy: Philipp Rybakov)
Researchers have observed three-dimensional magnetic spin structures called hopfions in a naturally-

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Isabelle Dumé is a contributing editor to Physics World
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