New magnetic phase of the chiral skyrmion material Cu2OSeO3

@article{Qian2018NewMP,
  title={New magnetic phase of the chiral skyrmion material Cu2OSeO3},
  author={Fengjiao Qian and Lars Johannes Bannenberg and Heribert Wilhelm and Gr{\'e}gory Chaboussant and Lisa M. Debeer-Schmitt and Marcus Peter Schmidt and Aisha Aqeel and Thomas T. M. Palstra and Ekkes Br{\"u}ck and Anton J. E. Lefering and Catherine Pappas and Maxim Mostovoy and Andrey O. Leonov},
  journal={Science Advances},
  year={2018},
  volume={4}
}
A new magnetic phase is reported in the chiral magnet, Cu2OSeO3, which is predicted to affect its physical properties. The lack of inversion symmetry in the crystal lattice of magnetic materials gives rise to complex noncollinear spin orders through interactions of a relativistic nature, resulting in interesting physical phenomena, such as emergent electromagnetism. Studies of cubic chiral magnets revealed a universal magnetic phase diagram composed of helical spiral, conical spiral, and… 
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68 Citations
Background Citations
10
Methods Citations
1
Results Citations
3

68 Citations

Observation of two independent skyrmion phases in a chiral magnetic material

Magnetic materials can host skyrmions, which are topologically non-trivial spin textures. In chiral magnets with cubic lattice symmetry, all previously observed skyrmion phases require thermal…

Observation of two independent skyrmion phases in a chiral magnetic material

Magnetic materials can host skyrmions, which are topologically non-trivial spin textures. In chiral magnets with cubic lattice symmetry, all previously observed skyrmion phases require thermal…

Vital role of magnetocrystalline anisotropy in cubic chiral skyrmion hosts

Magnetic anisotropy is anticipated to govern the formation of exotic spin textures reported recently in cubic chiral magnets, like low-temperature tilted conical and skyrmion lattice (SkL) states and…

Vital role of magnetocrystalline anisotropy in cubic chiral skyrmion hosts

Magnetic anisotropy is anticipated to govern the formation of exotic spin textures reported recently in cubic chiral magnets, like low-temperature tilted conical and skyrmion lattice (SkL) states and…

Multiple low-temperature skyrmionic states in a bulk chiral magnet

Magnetic skyrmions are topologically protected nanoscale spin textures with particle-like properties. In bulk cubic helimagnets, they appear under applied magnetic fields and condense spontaneously…

Multiple low-temperature skyrmionic states in a bulk chiral magnet

Magnetic skyrmions are topologically protected nanoscale spin textures with particle-like properties. In bulk cubic helimagnets, they appear under applied magnetic fields and condense spontaneously…

Skyrmions and spirals in cubic chiral magnets

Magnetic skyrmions are two-dimensional topologicallyprotected spin textureswith particle like properties which may crystallize inlattices that are typically oriented perpendicular to the magnetic…

New magnetic intermediate state, “B-phase,” in the cubic chiral magnet MnSi

It is well known that the archetype chiral magnet MnSi stabilizes a skyrmion lattice, termed “A-phase,” in a narrow temperature range in the vicinity of the paramagnetic boundary around Tc ∼ 29 K and…

Complex magnetic phases in the polar tetragonal intermetallic NdCoGe3

Polar materials can host topological magnetic phases, which often emerge by applying a field to a modulated magnetic structure. Here, the authors investigate magnetism in the polar tetragonal…

Magnetic phase diagram and vanishing topological Hall effect in the chiral antiferromagnet Co2−x Pd x Mo3N

The magnetic phase diagram and topological Hall effect (THE) are studied by magnetization and transport measurements for chiral antiferromagnet (AFM) Co2-x Pd x Mo3N ( x = 0–1.61) thin films with the…
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References

SHOWING 1-10 OF 44 REFERENCES

Magnetoelectric nature of skyrmions in a chiral magnetic insulator Cu2OSeO3

Dielectric properties were investigated under various magnitudes and directions of magnetic field (H) for a chiral magnetic insulator Cu2OSeO3. We found that the skyrmion crystal induces electric…

Magnetoelectric effects in the skyrmion host material Cu2OSeO3

This work provides a thorough investigation of magnetoelectric coupling, polarization and dielectric constants of the ordered magnetic and polar phases of single-crystalline Cu2OSeO3 in external magnetic fields up to 150 mT and at temperatures below 60 K.

Néel-type skyrmion lattice with confined orientation in the polar magnetic semiconductor GaV4S8.

A new Néel-type of SkL describable as a superposition of spin cycloids in contrast to the Bloch-type SkL in chiral magnets described in terms of spin helices is found in the polar magnetic semiconductor GaV4S8 with rhombohedral (C3v) symmetry and easy axis anisotropy.

Skyrmion lattice structural transition in MnSi

This study suggests that various skyrmion lattices can emerge at low temperatures, where the skyrMions exhibit distinct topological nature and high sensitivity to the local magnetic anisotropy arising from the underlying chemical lattice.

Skyrmion Lattice in a Chiral Magnet

This study experimentally establishes magnetic materials lacking inversion symmetry as an arena for new forms of crystalline order composed of topologically stable spin states in the chiral itinerant-electron magnet MnSi.

Transition to and from the skyrmion lattice phase by electric fields in a magnetoelectric compound

Combination of magnetic-susceptibility measurements and microwave spectroscopy reveals that although the metastable skyrmion lattice is normally hidden behind a more thermodynamically stable conical phase, it emerges under electric fields and persists down to the lowest temperature, establishing a bistability distinct from the transition hysteresis.

Robust metastable skyrmions and their triangular-square lattice structural transition in a high-temperature chiral magnet.

It is described that for a room-temperature skyrmion material, β-Mn-type Co 8Zn 8Mn 4, a field-cooling via the equilibrium SkX state can suppress the transition to the helical or conical state, instead realizing robust metastable SkX states that survive over a very wide temperature and magnetic-field region.

Real-space observation of a two-dimensional skyrmion crystal

Real-space imaging of a two-dimensional skyrmion lattice in a thin film of Fe0.5Co 0.5Si using Lorentz transmission electron microscopy reveals a controlled nanometre-scale spin topology, which may be useful in observing unconventional magneto-transport effects.

Entangled tetrahedron ground state and excitations of the magnetoelectric skyrmion material Cu2OSeO3

The strongly correlated cuprate Cu2OSeO3 has been recently identified as the first insulating system exhibiting a skyrmion lattice phase. Using a microscopic multiboson theory for its magnetic ground…

Topological Hall effect in the A phase of MnSi.

This work reports a distinct additional contribution to the Hall effect in the temperature and magnetic field range of the proposed Skyrmion lattice, where such a contribution is neither seen nor expected for a normal helical state.