Inducing skyrmions in ultrathin Fe films by hydrogen exposure

@article{Hsu2018InducingSI,
  title={Inducing skyrmions in ultrathin Fe films by hydrogen exposure},
  author={Pin-Jui Hsu and Levente R{\'o}zsa and Aurore Finco and Lorenz Schmidt and Kriszti{\'a}n Palot{\'a}s and Elena Vedmedenko and L'aszl'o Udvardi and L{\'a}szl{\'o} Szunyogh and Andr{\'e} Kubetzka and Kirsten von Bergmann and Roland Wiesendanger},
  journal={Nature Communications},
  year={2018},
  volume={9}
}
Magnetic skyrmions are localized nanometer-sized spin configurations with particle-like properties, which are envisioned to be used as bits in next-generation information technology. An essential step toward future skyrmion-based applications is to engineer key magnetic parameters for developing and stabilizing individual magnetic skyrmions. Here we demonstrate the tuning of the non-collinear magnetic state of an Fe double layer on an Ir(111) substrate by loading the sample with atomic hydrogen… Expand

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References

SHOWING 1-10 OF 69 REFERENCES
Engineering skyrmions in transition-metal multilayers for spintronics
TLDR
This work predicts 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, and predicts their emergence based on density functional theory and spin dynamics simulations. Expand
Tailoring magnetic skyrmions in ultra-thin transition metal films.
TLDR
It is demonstrated that the properties of magnetic skyrmions at transition metal interfaces such as their diameter and their stability can be tuned by the structure and composition of the interface and that a description beyond a micromagnetic model is required in such systems. Expand
Formation of magnetic skyrmions with tunable properties in PdFe bilayer deposited on Ir(111)
We perform an extensive study of the spin-configurations in a PdFe bilayer on Ir(111) in terms of ab initio and spin-model calculations. We use the spin-cluster expansion technique to obtain spinExpand
Nucleation, stability and current-induced motion of isolated magnetic skyrmions in nanostructures.
TLDR
It is demonstrated by numerical investigations that an isolated skyrmion can be a stable configuration in a nanostructure, can be locally nucleated by injection of spin-polarized current, and can be displaced by current-induced spin torques, even in the presence of large defects. Expand
Oxygen-enabled control of Dzyaloshinskii-Moriya Interaction in ultra-thin magnetic films
TLDR
It is demonstrated that the magnitude and sign of DMI can be entirely controlled by tuning the oxygen coverage of the magnetic film, therefore enabling the smart design of chiral magnetism in ultra-thin films and suggesting the possibility of electrical tuning of exotic magnetic phases. Expand
Tunable room-temperature magnetic skyrmions in Ir/Fe/Co/Pt multilayers.
TLDR
This work presents a tunable RT skyrmion platform based on multilayer stacks of Ir/Fe/Co/Pt, which is established a platform for investigating functional sub-50-nm RTskyrmions, pointing towards the development of skyrMion-based memory devices. Expand
Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmions at room temperature.
TLDR
This work designed cobalt-based multilayered thin thin metals in which the cobalt layer is sandwiched between two heavy metals and so provides additive interfacial Dzyaloshinskii-Moriya interactions (DMIs), which reach a value close to 2 mJ m(-2) in the case of the Ir|Co|Pt asymmetric multilayers. Expand
Spontaneous atomic-scale magnetic skyrmion lattice in two dimensions
Skyrmions are topologically protected field configurations with particle-like properties that play an important role in various fields of science. Recently, skyrmions have been observed to beExpand
Writing and Deleting Single Magnetic Skyrmions
TLDR
This work reports on an ultrathin magnetic film in which individual skyrmions can be written and deleted in a controlled fashion with local spin-polarized currents from a scanning tunneling microscope, demonstrating the feasibility of using spin- polarized tunnel currents for the controlled manipulation of individual sk Kyrmions. Expand
Blowing magnetic skyrmion bubbles
TLDR
A phase diagram for skyrmion formation is determined and the efficient manipulation of these dynamically created skyrMions, including depinning and motion, are revealed, which could lead to progress in sk Kyrmion-based spintronics. Expand
...
1
2
3
4
5
...