Skyrmion confinement in ultrathin film nanostructures in the presence of Dzyaloshinskii-Moriya interaction
By S. Rohart, A. Thiaville. 2013
727 citations recorded by the source corpus.
We study the modification of micromagnetic configurations in nanostructures, due to the Dzyaloshinskii-Moriya interaction (DMI), that appear at the interface of an ultrathin film. We show that this interaction leads to micromagnetic boundary conditions that bend the magnetization at the edges. We explore several cases of ultrathin film nanostructures that allow analytical calculations (one-dimensional systems, domain walls, cycloids, and skyrmions), compare with fully numerical calculations, and show that a good physical understanding of this type of micromagnetics can be reached. We particularly focus on skyrmions confined in circular nanodots and show that edges allow for the isolation of single skyrmions for a large range of the DMI parameter.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/dab6c2d1991ae130fd6d1f2b5f6316b6e2bd5ee3
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In Atomic and Molecular Physics, and Optics
In Condensed Matter Physics
Citations in the corpus
- Room-temperature chiral magnetic skyrmions in ultrathin magnetic nanostructures. (2016, background): “e the anisotropy, the DMI and the exchange [30, 34], can be easily tuned by playing with the nature and thickness of the materials composing the multilayers.”
- Skyrmion-electronics: writing, deleting, reading and processing magnetic skyrmions toward spintronic applications (2019, methodology): “ce-induced DM interaction coupling energy, and �is the normal to the interface determined by Moriya’s rule [24], oriented from the large SOC material to the magnetic film. In the micromagnetic model [25], the interface-induced DM interaction reads �iDM=𝑏∬�iDM[𝑚�(𝒎∙∇)−(∇∙𝒎)𝑚�]𝑑2�, (14) with D i”
- Skyrmions at room temperature : From magnetic thin films to magnetic multilayers (2015, background): “1 mJ/m(2) needed to obtain a skyrmion lattice ground state [25, 26].”