Abstract:
:Magnetic skyrmions are localized, topologically protected spin structures that have been proposed for storing or processing information due to their intriguing dynamical and transport properties. Important in terms of applications is the recent discovery of interface stabilized skyrmions as evidenced in ultra-thin transition-metal films. However, so far only skyrmions at interfaces with a single atomic layer of a magnetic material were reported, which greatly limits their potential for application in devices. Here we predict the emergence of skyrmions in [4d/Fe2/5d]n multilayers, that is, structures composed of Fe biatomic layers sandwiched between 4d and 5d transition-metal layers. In these composite structures, the exchange and the Dzyaloshinskii-Moriya interactions that control skyrmion formation can be tuned separately by the two interfaces. This allows engineering skyrmions as shown based on density functional theory and spin dynamics simulations.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Dupé B,Bihlmayer G,Böttcher M,Blügel S,Heinze Sdoi
10.1038/ncomms11779subject
Has Abstractpub_date
2016-06-03 00:00:00pages
11779issn
2041-1723pii
ncomms11779journal_volume
7pub_type
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