Skyrmions and Antiskyrmions in Quasi-Two-Dimensional Magnets

Kovalev, Alexey A.; Sandhoefner, Shane

doi:10.3389/fphy.2018.00098

Title: Skyrmions and Antiskyrmions in Quasi-Two-Dimensional Magnets

Journal Article · Thu Sep 27 00:00:00 EDT 2018 · Frontiers in Physics

DOI:https://doi.org/10.3389/fphy.2018.00098· OSTI ID:1474184

Kovalev, Alexey A.; Sandhoefner, Shane

A stable skyrmion, representing the smallest realizable magnetic texture, could be an ideal element for ultra-dense magnetic memories. Here, we review recent progress in the field of skyrmionics, which is concerned with studies of tiny whirls of magnetic configurations for novel memory and logic applications, with a particular emphasis on antiskyrmions. Magnetic antiskyrmions represent analogs of skyrmions with opposite topological charge. Just like skyrmions, antiskyrmions can be stabilized by the Dzyaloshinskii-Moriya interaction, as has been demonstrated in a recent experiment. Here, we emphasize differences between skyrmions and antiskyrmions, e.g., in the context of the topological Hall effect, skyrmion Hall effect, as well as nucleation and stability. Recent progress suggests that antiskyrmions can be potentially useful for many device applications. Antiskyrmions offer advantages over skyrmions as they can be driven without the Hall-like motion, offer increased stability due to dipolar interactions, and can be realized above room temperature.

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Research Organization:: University of Nebraska-Lincoln, Lincoln, NE (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0014189

OSTI ID:: 1474184

Alternate ID(s):: OSTI ID: 1510511

Journal Information:: Frontiers in Physics, Journal Name: Frontiers in Physics Vol. 6; ISSN 2296-424X

Publisher:: Frontiers Media SACopyright Statement

Country of Publication:: Switzerland

Language:: English

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Cited by: 40 works

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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
Dzyaloshinskii Moriya interaction
chiral spin textures
race-track memory
topological transport
magnetic skyrmion
antiskyrmion
skyrmion Hall effect
skyrmion stability