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Current-driven coherent skyrmion generation.

Abstract：

:The next-generation logic and memory devices using magnetic skyrmions as spintronic information carriers are frequently studied, thanks to their remarkable magnetic stability, extremely compact size and very-low-cost driving forces within nanotracks. In order to realize skyrmion-based spintronic devices, understanding the skyrmion generation and their dynamics are essential. In this study, we have carried out a systematic micromagnetic simulation study on coherent magnetic skyrmion generation in which we theoretically engineered nanotracks by embedding an anti-notch to a channel of certain width. We found that the drift velocity and the skyrmion generation frequency can be tailored by the applied spin-polarized DC current density. Moreover, skyrmion generation is crucially affected by both damping and nonadiabaticity parameters, as well as the geometry of the anti-notch. We anticipate that our predictions provide rational basis for skyrmion-based devices in which skyrmions are used as information carriers, and influence future discussions.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Deger C,Yavuz I,Yildiz F

doi

10.1038/s41598-019-40220-6

subject

Has Abstract

pub_date

2019-03-05 00:00:00

pages

3513

issue

1

issn

2045-2322

pii

10.1038/s41598-019-40220-6

journal_volume

9

pub_type

杂志文章

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