Magnetic Radial Vortex Stabilization and Efficient Manipulation Driven by the Dzyaloshinskii-Moriya Interaction and Spin-Transfer Torque.

@article{Siracusano2016MagneticRV,
  title={Magnetic Radial Vortex Stabilization and Efficient Manipulation Driven by the Dzyaloshinskii-Moriya Interaction and Spin-Transfer Torque.},
  author={Giulio Siracusano and Riccardo Tomasello and Anna Giordano and Vito Puliafito and Bruno Azzerboni and Ozhan Ozatay and Mario Carpentieri and Giovanni Finocchio},
  journal={Physical review letters},
  year={2016},
  volume={117 8},
  pages={
          087204
        }
}
Solitons are very promising for the design of the next generation of ultralow power devices for storage and computation. The key ingredient to achieving this goal is the fundamental understanding of their stabilization and manipulation. Here, we show how the interfacial Dzyaloshinskii-Moriya Interaction (IDMI) is able to lift the energy degeneracy of a magnetic vortex state by stabilizing a topological soliton with radial chirality, hereafter called radial vortex. It has a noninteger Skyrmion… 
Observation of Magnetic Radial Vortex Nucleation in a Multilayer Stack with Tunable Anisotropy
TLDR
In the presence of i-DMI in Pt/CoFeB/Ti multilayers by tuning the magnetic anisotropy via interface engineering and postproduction treatments, this work can stabilize a variety of magnetic configurations such as Néel skyrmions, horseshoes and most importantly, the recently predicted isolated radial vortices at room temperature and under zero bias field.
Magnetic Radial Vortex Core and Coupled Edge-Soliton Pair Gyration Dynamics
We studied the gyration dynamics of a magnetic radial vortex core by injecting spin-polarized current into a nanodisk through a nanocontact. The simulation results indicate that the radial vortex
Radial vortex core reversal driven by a spin-polarized current in a nanocontact structure
In this paper, we propose a reversal mechanism of magnetic radial vortex core in a Permalloy nanodisk driven by a spin-polarized current injected through a nanocontact. The micromagnetic simulation
Reversing the circulation of ferromagnetic nanodisks with a local circular magnetic field.
TLDR
Micromagnetic simulations indicate that a line current concentrated in the center of a nanodisk can reverse the magnetization of the disk at a value over one order of magnitude smaller than the current required if the current is instead uniformly distributed across the cross section of disk.
Stability and dynamics of in-plane skyrmions in collinear ferromagnets
We study the emergence and dynamics of in-plane skyrmions in collinear ferromagnetic heterostructures. We present a minimal energy model for this class of magnetic textures, determine the crystal
Energy efficient and fast reversal of a fixed skyrmion two-terminal memory with spin current assisted by voltage controlled magnetic anisotropy.
TLDR
It is shown with rigorous micromagnetic simulations that skyrmion switching proceeds along a different path at very low PMA, which results in a significant reduction in the spin current or time required for reversal.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 59 REFERENCES
APPL
Statistical packages have been used for decades to analyze large datasets or to perform mathematically intractable statistical methods. These packages are not capable of working with random variables
Phys
  • Rev. B 93, 020401(R)
  • 2016
Phys
  • 115, 17C730
  • 2014
Nat
  • Nanotech. 8, 527
  • 2013
Nat
  • Comm. 4, 1463 (2013); J. Iwasaki, M. Mochizuki, and N. Nagaosa, Nat. Nanotech. 8, 742–747
  • 2013
Nat
  • Nanotech. 8, 839–844
  • 2013
S
  • Rohart, A.Thiaville, and A. Fert, Nat. Nanotech. 8, 839
  • 2013
Nat
  • Phys. 4, 67
  • 2008
New J
  • Phys. 18, 075011
  • 2016
Phys
  • Rev. B 88, 184422 (2013). PRL 117, 087204
  • 2016
...
1
2
3
4
5
...