Thermal effects on current-related skyrmion formation in a nanobelt

We report an in-situ Lorentz transmission electron microscopy (LTEM) investigation to study the thermal effects on the generation of magnetic skyrmions within a nanobelt. Under an action of a moderate current pulse, magnetic skyrmions appear even in the temperature range far below the critical tempe...

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Bibliographic Details
Published inApplied physics letters Vol. 112; no. 21
Main Authors Zhao, Xuebing, Wang, Shasha, Wang, Chao, Che, Renchao
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 21.05.2018
Subjects
Applied physics
Critical temperature
Finite element method
Hypothetical particles
Ohmic dissipation
Particle theory
Resistance heating
Temperature effects
Transmission electron microscopy
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Summary:We report an in-situ Lorentz transmission electron microscopy (LTEM) investigation to study the thermal effects on the generation of magnetic skyrmions within a nanobelt. Under an action of a moderate current pulse, magnetic skyrmions appear even in the temperature range far below the critical temperature and even at zero field. Finite element simulation reveals that the Joule heating plays an essential role in this behavior. Our results also uncover the importance of the cooling conditions in the current-related in situ LTEM research.
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ISSN:0003-6951
1077-3118
DOI:10.1063/1.5031474