New magnetic phase of the chiral skyrmion material Cu2OSeO3

Abstract

The lack of inversion symmetry in the crystal lattice of magnetic materials gives rise to complex non-collinear spin orders through interactions of 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 skyrmion crystal phases. Here, we report a remarkable deviation from this universal behavior. By combining neutron diffraction with magnetization measurements we observe a new multi-domain state in Cu2OSeO3. Just below the upper critical field at which the conical spiral state disappears, the spiral wave vector rotates away from the magnetic field direction. This transition gives rise to large magnetic fluctuations. We clarify physical origin of the new state and discuss its multiferroic properties.

References in corpus (22)

• Skyrmion Lattice in a Chiral Magnet
• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
• Topological Hall effect in the A-phase of MnSi
• Blowing Magnetic Skyrmion Bubbles
• Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
• Skyrmions at room temperature : From magnetic thin films to magnetic multilayers
• Emergent electrodynamics of skyrmions in a chiral magnet
• Discovery of Magnetic Antiskyrmions Beyond Room Temperature in Tetragonal Heusler Materials
• Dynamics of Skyrmion Crystals in Metallic Thin Films
• Unusual Hall Effect Anomaly in MnSi Under Pressure
• Robust metastable skyrmions and their triangular-square lattice-structural transition in a high-temperature chiral magnet
• Magnetoelectric nature of skyrmions in a chiral magnetic insulator Cu2OSeO3
• Magnetoelectric coupling in the cubic ferrimagnet Cu2OSeO3
• The quantum origins of skyrmions and half-skyrmions in Cu2OSeO3
• Theory of helimagnons in itinerant quantum systems
• Dynamical magnetoelectric phenomena of multiferroic skyrmions
• Generic aspects of skyrmion lattices in chiral magnets
• Electrical detection of spiral spin structures in Pt|Cu_2OSeO_3 heterostructures
• Magnetoelectric effects in the skyrmion host material Cu2OSeO3
• Extended skyrmion lattice scattering and long-time memory in the chiral magnet Fe${}_{1-x}$Co${}_x$Si
• Entangled tetrahedron ground state and excitations of the magneto-electric skyrmion material Cu${}_2$OSeO${}_3$

Cited by in corpus (41)

• Observation of two independent skyrmion phases in a chiral magnetic material
• Observation of domain wall bimerons in chiral magnets
• Microwave spectroscopy of the low-temperature skyrmion state in Cu2OSeO3
• Solid--liquid transition of skyrmions in a two-dimensional chiral magnet
• Evolution of magneto-crystalline anisotropies in Mn${}_{1-x}$Fe${}_x$Si and Mn${}_{1-x}$Co${}_x$Si as inferred from small-angle neutron scattering and bulk properties
• Magnetic hexamers interacting in layers in the (Na,K)${}_2$Cu${}_3$O(SO${}_4{)}_3$ minerals
• Magnon-photon coupling in a non-collinear magnetic insulator Cu${}_2$OSeO${}_3$
• Evolution of helimagnetic correlations in Mn${}_{1-x}$Fe${}_x$Si with doping: a small-angle neutron scattering study
• Ferromagnetic resonance with magnetic phase selectivity by means of resonant elastic x-ray scattering on a chiral magnet
• Linking emergent phenomena and broken symmetries through one-dimensional objects and their dot/cross products
• Field and anisotropy driven transformations of spin spirals in cubic skyrmion hosts
• Metastable solitonic states in the strained itinerant helimagnet FeGe
• Observation of a new light-induced skyrmion phase in the Mott insulator Cu2OSeO3
• Field-induced reorientation of helimagnetic order in Cu${}_2$OSeO${}_3$ probed by magnetic force microscopy
• Magnetism and spin dynamics of an S=3/2 frustrated trillium lattice antiferromagnet K2CrTi(PO4)3
• Increasing the skyrmion stability in Cu${}_2$OSeO${}_3$ by chemical substitution
• Low energy magnons in the chiral ferrimagnet ${\text{Cu}}_2{\text{OSeO}}_3$: a coarse-grained approach
• Tunable gigahertz dynamics of low-temperature skyrmion lattice in a chiral magnet
• Chiral standing spin waves in skyrmion lattice
• Pinning of Helimagnetic Phase Transitions in Zn-Substituted Skyrmion Host Cu${}_2$OSeO${}_3$
• Spin wave stiffness and damping in a frustrated chiral helimagnet Co${}_8$Zn${}_8$Mn${}_4$ as measured by small-angle neutron scattering
• Stability of the skyrmion lattice near the critical temperature in cubic helimagnets
• Experimental Evidence of a change of Exchange Anisotropy Sign with Temperature in Zn-Substituted Cu2OSeO3
• Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction
• Direct observation of the exchange anisotropy in the helimagnetic insulator Cu${}_2$OSeO${}_3$
• Evolution of Helimagnetic Correlations when approaching the Quantum Critical Point of Mn${}_{1-x}$Fe${}_x$Si
• Complex magnetic phases in polar tetragonal intermetallic NdCoGe${}_3$
• Chiral surface spin textures in Cu${}_2$OSeO${}_3$ unveiled by soft x-ray scattering in specular reflection geometry
• Imaging magnetic spiral phases, skyrmion clusters, and skyrmion displacements at the surface of bulk Cu${}_2$OSeO${}_3$
• Site-specific electronic and magnetic excitations of the skyrmion material Cu${}_2$OSeO${}_3$
• Hybrid Bloch-Néel spiral states in Mn${}_{1.4}$PtSn probed by resonant soft x-ray scattering
• Short-wave magnons with multipole spin precession detected in the topological bands of a skyrmion lattice
• Effect of chemical substitution on the skyrmion phase in Cu${}_2$OSeO${}_3$
• Growth and helicity of non-centrosymmetric Cu${}_2$OSeO${}_3$ crystals
• Structural and magnetic properties of CoTeMoO${}_6$ revisited
• Cu2OSeO3 Turns Trigonal with Structural Transformation and Implications for Skyrmions
• Quintuplet condensation in the skyrmionic insulator Cu2OSeO3 at ultrahigh magnetic fields
• Observation of distorted tilted conical phase at the surface of a bulk chiral magnet with resonant elastic x-ray scattering
• Angle-Resolved Magneto-Chiral Anisotropy in a Non-Centrosymmetric Atomic Layer Superlattice
• Helical spin dynamics in Cu${}_2$OSeO${}_3$ as measured with small-angle neutron scattering
• Magnetic field-induced chiral soliton lattice in the bulk magnetoelectric helimagnet Cu${}_2$OSeO${}_3$