Results 21 to 30 of about 9,811 (235)

Nonexistence of Skyrmion–Skyrmion and Skyrmion–anti-Skyrmion static equilibria [PDF]

open access: yesJournal of Mathematical Physics, 2011
We consider classical static Skyrmion–anti-Skyrmion and Skyrmion–Skyrmion configurations, symmetric with respect to a reflection plane, or symmetric up to a G-parity transformation, respectively. We show that the stress tensor component completely normal to the reflection plane, and hence its integral over the plane, is negative definite or positive ...
Gibbons, GW, Warnick, CM, Wong, WW
openaire   +3 more sources

Skyrmion Echo in a System of Interacting Skyrmions

open access: yesPhysical Review Letters, 2022
We consider helical rotation of skyrmions confined in the potentials formed by nano-disks. Based on numerical and analytical calculations we propose the skyrmion echo phenomenon. The physical mechanism of the skyrmion echo formation is also proposed.
X.-G. Wang   +7 more
openaire   +4 more sources

Skyrmion–anti-Skyrmion chains [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2009
Static axially symmetric sphaleron-type solutions describing chains of interpolating Skyrmion--anti-Skyrmions have been constructed numerically. The configurations are characterized by two integers n and m, where $\pm n$ are the winding numbers of the constituent Skyrmion and anti-Skyrmion and the second integer m defines type of the solution, it has ...
Shnir, Ya., Tchrakian, D. H.
openaire   +2 more sources

Monopole Skyrmions [PDF]

open access: yesJournal of Mathematical Physics, 2000
A systematic numerical study of the classical solutions to the combined system consisting of the Georgi–Glashow model and the SO(3) gauged Skyrme model is presented. The gauging of the Skyrme system permits a lower bound on the energy, so that the solutions of the composite system can be topologically stable. The solutions feature some very interesting
Kleihaus, B.   +2 more
openaire   +3 more sources

Transformations from stripy states to skyrmion crystals [PDF]

open access: yes, 2023
Stripy states, consisting of a collection of stripy spin textures, are the precursors of skyrmion crystals (SkXs). The common belief is that stripy states and SkXs are topologically unconnected and that transitions between SkXs and stripy states are ...
Wang, X. R.   +4 more
core   +1 more source

Skyrmions in nanorings: A versatile platform for skyrmionics

open access: yesPhysical Review Applied, 2023
The dynamical properties of skyrmions can be exploited to build devices with new functionalities. Here, we first investigate a skyrmion-based ring-shaped device by means of micromagnetic simulations and Thiele equation. We subsequently show three applications scenarios: (1) a clock with tunable frequency that is biased with an electrical current having
Dimitris Kechrakos   +7 more
openaire   +3 more sources

Rational Skyrmions

open access: yesJournal of Physics A: Mathematical and Theoretical, 2023
Abstract A new method is introduced to construct approximations to Skyrmions that are explicit rational functions of the spatial Cartesian coordinates. The scheme uses ADHM data of a Yang–Mills instanton to produce a Skyrmion with a baryon number that is equal to the instanton number.
Derek Harland, Paul Sutcliffe
openaire   +3 more sources

Scattering of Skyrmions [PDF]

open access: yes, 2015
In this paper, we present a detailed study of Skyrmion-Skyrmion scattering for two B=1 Skyrmions in the attractive channel where we observe two different scattering regimes. For large separation, the scattering can be approximated as interacting dipoles.
Foster, David   +4 more
core   +1 more source

Programmable skyrmion logic gates based on skyrmion tunneling [PDF]

open access: yes, 2022
International audienceMagnetic skyrmions are promising candidates as elementary nanoscale bits in logic-in-memory devices, intrinsically merging high-density memory and computing capabilities.
Gaudin, Gilles   +13 more
core   +1 more source

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