Skyrmion Lattice in a Chiral Magnet

@article{Mhlbauer2009SkyrmionLI,
  title={Skyrmion Lattice in a Chiral Magnet},
  author={Sebastian M{\"u}hlbauer and Benedikt Binz and Florian Jonietz and Christian Pfleiderer and Achim Rosch and Andreas Neubauer and Robert Georgii and Peter B{\"o}ni},
  journal={Science},
  year={2009},
  volume={323},
  pages={915 - 919}
}
Skyrmions represent topologically stable field configurations with particle-like properties. We used neutron scattering to observe the spontaneous formation of a two-dimensional lattice of skyrmion lines, a type of magnetic vortex, in the chiral itinerant-electron magnet MnSi. The skyrmion lattice stabilizes at the border between paramagnetism and long-range helimagnetic order perpendicular to a small applied magnetic field regardless of the direction of the magnetic field relative to the… 

Skyrmion lattice in a two-dimensional chiral magnet

of the chiral magnet re-written in the CP 1 representation is shown to be a convenient framework for the analysis of the Skyrmion states. Phase diagram of the model at zero temperature gives a

Generic Aspects of Skyrmion Lattices in Chiral Magnets

Magnetic skyrmions are topologically non-trivial spin whirls that may not be transformed continuously into topologically trivial states such as ferromagnetic spin alignment. In recent years lattice

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 be

Vortex Lattices in Superconducting Niobium and Skyrmion Lattices in Chiral MnSi: An Investigation by Neutron Scattering

We use small angle neutron scattering as a versatile tool for the investigation of two different kinds of complex magnetic order: We examine the static and dynamic properties of the vortex lattice

Dynamics of magnetic skyrmions

We review the recent progress on the magnetic skyrmions in chiral magnetic materials. The magnetic skyrmion is a topological spin configuration with localized spatial extent, which could be thought

Chiral Skyrmionic matter in non-centrosymmetric magnets

Axisymmetric magnetic strings with a fixed sense of rotation and nanometer sizes (chiral magnetic vortices or Skyrmions) have been predicted to exist in a large group of non-centrosymmetric crystals

Skyrmions in Chiral Magnets

Skyrmions are topological solitons originally invented by Tony Skyrme as a model for the nucleon, but which have since been realized in a broad range of other physical contexts. In magnetic

Majorana bound states in magnetic skyrmions

Magnetic skyrmions are highly mobile nanoscale topological spin textures. We show, both analytically and numerically, that a magnetic skyrmion of an even azimuthal winding number placed in proximity

Stability of skyrmions in perturbed ferromagnetic chiral magnets

Magnetic skyrmions, topological spin textures observed in chiral magnets, have attracted huge interest due to their applications in the field of spintronics. In this work we study the stability of

Exact non-circular symmetric N-skyrmions in helical magnets without inversion symmetry

The unusual magnetic behaviour of helimagnet MnSi, noticed in recent years, prompted the suspicion that the magnetic states arising in such crystals are of topological nature. Recent experiments
...

References

SHOWING 1-10 OF 41 REFERENCES

Skyrme crystal in a two-dimensional electron gas.

The filling factor dependence of the electron spin-polarization, calculated for the square lattice Skyrme crystal, is in excellent agreement with recent experiments.

Crystalline phases in chiral ferromagnets : Destabilization of helical order

In chiral ferromagnets, weak spin-orbit interactions twist the ferromagnetic order into spirals, leading to helical order. We investigate an extended Ginzburg-Landau theory of such systems where the

Quantum phase transitions of magnetic rotons.

It is proposed that magnetic rotons are essential for the description of the anomalous high-pressure behavior of the itinerant helical ferromagnet MnSi.

Spontaneous skyrmion ground states in magnetic metals

It is theoretically shown that skyrmion textures may form spontaneously in condensed-matter systems with chiral interactions without the assistance of external fields or the proliferation of defects, within a phenomenological continuum model based on a few material-specific parameters that can be determined experimentally.

Theory of the helical spin crystal: a candidate for the partially ordered state of MnSi.

A Landau theory is introduced to study the properties of helical spin crystals in MnSi, in particular the effect of crystal anisotropy, magnetic field, and disorder.

Non-Fermi Liquid Metal Without Quantum Criticality

The nature of the phase diagram of MnSi is resolved and it is established that a stable, extended non–Fermi liquid state emerges under applied pressure without quantum criticality, suggesting that new forms of quantum order may be expected even far from quantum phase transitions.

Field-induced reorientation of the spin helix in MnSi near T c

The chiral spin fluctuations and the spiral structure of the single crystal MnSi has been studied by small angle polarized neutron scattering near T{sub c}=29 K under applied field. A weak magnetic