Blowing Magnetic Skyrmion Bubbles

Blowing Magnetic Skyrmion Bubbles

| Wanjun Jiang, Pramey Upadhyaya, Wei Zhang, Guoqiang Yu, M. Benjamin Jungfleisch, Frank Y. Fradin, John E. Pearson, Yaroslav Tserkovnyak, Kang L. Wang, Olle Heinonen, Suzanne G. E. te Velthuis, and Axel Hoffmann
The paper presents an experimental method to generate mobile magnetic skyrmions in a solid-state system using spatially divergent in-plane electric currents at room temperature. By introducing a geometrical constriction in a trilayer wire, the current distribution becomes spatially divergent, leading to instabilities in the magnetic domain structures similar to Rayleigh-Plateau instabilities in fluid flows. This results in the formation of skyrmion bubbles from stripe domains. The study demonstrates the efficient manipulation of these dynamically created skyrmions, including depinning and motion, and establishes a phase diagram for skyrmion formation. The findings have implications for the development of skyrmion-based spintronics and memory technologies.The paper presents an experimental method to generate mobile magnetic skyrmions in a solid-state system using spatially divergent in-plane electric currents at room temperature. By introducing a geometrical constriction in a trilayer wire, the current distribution becomes spatially divergent, leading to instabilities in the magnetic domain structures similar to Rayleigh-Plateau instabilities in fluid flows. This results in the formation of skyrmion bubbles from stripe domains. The study demonstrates the efficient manipulation of these dynamically created skyrmions, including depinning and motion, and establishes a phase diagram for skyrmion formation. The findings have implications for the development of skyrmion-based spintronics and memory technologies.
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