Electrical manipulation of skyrmions in a chiral magnet - Kölner UniversitätsPublikationsServer

Wang, Weiwei ORCID: 0000-0001-6997-3626, Song, Dongsheng, Wei, Wensen, Nan, Pengfei, Zhang, Shilei, Ge, Binghui, Tian, Mingliang, Zang, Jiadong ORCID: 0000-0002-5089-9806 and Du, Haifeng ORCID: 0000-0003-4263-5023 (2022). Electrical manipulation of skyrmions in a chiral magnet. Nat. Commun., 13 (1). BERLIN: NATURE PORTFOLIO. ISSN 2041-1723

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DOI:10.1038/s41467-022-29217-4

Abstract

There has been much interest in using skyrmions for new approaches to compution, however, creating, deleting and driving skyrmions remains a challenge. Here, Wang et al demonstrate all three operations for skyrmions in tailored Co8Zn10Mn2 nanodevices using tailored current pulses. Writing, erasing and computing are three fundamental operations required by any working electronic device. Magnetic skyrmions could be essential bits in promising in emerging topological spintronic devices. In particular, skyrmions in chiral magnets have outstanding properties like compact texture, uniform size, and high mobility. However, creating, deleting, and driving isolated skyrmions, as prototypes of aforementioned basic operations, have been a grand challenge in chiral magnets ever since the discovery of skyrmions, and achieving all these three operations in a single device is even more challenging. Here, by engineering chiral magnet Co8Zn10Mn2 into the customized micro-devices for in-situ Lorentz transmission electron microscopy observations, we implement these three operations of skyrmions using nanosecond current pulses with a low current density of about 10(10) A center dot m(-)(2) at room temperature. A notched structure can create or delete magnetic skyrmions depending on the direction and magnitude of current pulses. We further show that the magnetic skyrmions can be deterministically shifted step-by-step by current pulses, allowing the establishment of the universal current-velocity relationship. These experimental results have immediate significance towards the skyrmion-based memory or logic devices.

Item Type:

Journal Article

Creators:

Creators	Email	ORCID	ORCID Put Code
Wang, Weiwei	UNSPECIFIED	orcid.org/0000-0001-6997-3626	UNSPECIFIED
Song, Dongsheng	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Wei, Wensen	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Nan, Pengfei	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Zhang, Shilei	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Ge, Binghui	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Tian, Mingliang	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Zang, Jiadong	UNSPECIFIED	orcid.org/0000-0002-5089-9806	UNSPECIFIED
Du, Haifeng	UNSPECIFIED	orcid.org/0000-0003-4263-5023	UNSPECIFIED