open access

https://hdl.handle.net/2115/80479

Theoretical comparison between skyrmion and skyrmionium motions for spintronics applications

英語

2020-02-20

IOP Publishing

Japanese Journal of Applied Physics

59(SG)

SGGI04

We discuss applications of skyrmioniums to spintronics devices in comparison with the case of skyrmions in this study. It seems that the skyrmioniums are more beneficial than the skyrmions since it is derived from the Thiele equation that the skyrmion Hall effect does not occur in the case of the skyrmioniums. However, we have found that the skyrmioniums have also the disadvantage for the spintronics devices. We cannot utilize the skyrmionium in the system with small Gilbert damping constant since micromagnetic simulation has shown that the skyrmionium structure distorts largely when the Gilbert damping constant is small. From the above reason, the skyrmioniums are not entirely more beneficial to the spintronics devices than the skyrmions. In the last of this paper, we provide a creation method of the skyrmionium by utilizing pulsed magnetic fields. We consider that this method is useful to create the skyrmioniums experimentally. (C) 2020 The Japan Society of Applied Physics

学術雑誌論文

Accepted Manuscript

Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

This is the Accepted Manuscript version of an article accepted for publication in Japanese Journal of Applied Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.7567/1347-4065/ab5b6b

0021-4922