Element-specific soft X-ray spectroscopy, scattering and imaging studies of skyrmion-hosting compound Co${}_8$Zn${}_8$Mn${}_4$

Abstract

A room-temperature skyrmion-hosting compound Co${}_8$Zn${}_8$Mn${}_4$ has been examined by means of soft X-ray absorption spectroscopy, resonant small-angle scattering and extended reference holography. An element-selective study was performed by exciting the $2p$-to-$3d$ transitions near Co and Mn $L_{2,3}$ absorption edges. By utilizing the coherence of soft X-ray beams the element-specific real-space distribution of local magnetization at different temperatures has been reconstructed using iterative phase retrieval and holography with extended reference. It was shown that the magnetic moments of Co and Mn are ferromagnetically coupled and exhibit similar magnetic patterns. Both imaging methods provide a real-space resolution of 30 nm and allowed to record a magnetic texture in the temperature range between $T=20$ K and $T=120$ K, demonstrating the elongation of the skyrmions along the principal crystallographic axes at low temperatures. Micromagnetic simulations have shown that such deformation is driven by decreasing ratio of symmetric exchange interaction to antisymmetric Dzyaloshinskii-Moriya interaction in the system and effect of the cubic anisotropy.

References in corpus (30)

• The design and verification of Mumax3
• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• Spontaneous Skyrmion Ground States in Magnetic Metals
• Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
• Discovery of Magnetic Antiskyrmions Beyond Room Temperature in Tetragonal Heusler Materials
• Theory of current-driven motion of Skyrmions and spirals in helical magnets
• A new class of chiral materials hosting magnetic skyrmions beyond room temperature
• Observation of magnetic excitations of skyrmion crystal in a helimagnetic insulator
• Thermally Driven Ratchet Motion of Skyrmion Microcrystal and Topological Magnon Hall Effect
• Skyrmions with varying size and helicity in composition-spread helimagnetic alloys
• Dynamics of an Insulating Skyrmion under a Temperature Gradient
• Observation of stable Neel skyrmions in Co/Pd multilayers with Lorentz transmission electron microscopy
• Robust metastable skyrmions and their triangular-square lattice-structural transition in a high-temperature chiral magnet
• Rotating skyrmion lattices by spin torques and field or temperature gradients
• Electric field-induced Skyrmion distortion and giant lattice rotation in the magnetoelectric insulator Cu2OSeO3
• Formation and rotation of skyrmion crystal in the chiral-lattice insulator Cu2OSeO3
• Spin-orbit torque-driven skyrmion dynamics revealed by time-resolved X-ray microscopy
• Néel-type skyrmion lattice in tetragonal polar magnet VOSe${}_2$O${}_5$
• Resonant Elastic Soft X-Ray Scattering
• Long-range crystalline nature of the skyrmion lattice in MnSi
• Large Noncollinearity and Spin Reorientation in the Novel Mn2RhSn Heusler Magnet
• Driving magnetic skyrmions with microwave fields
• Multidomain Skyrmion Lattice State in Cu${}_2$OSeO${}_3$
• Coupled skyrmion sublattices in Cu2OSeO3
• Electronic structure investigation of CoO by means of soft X-ray scattering
• Spin-wave spectroscopy on Dzyaloshinskii-Moriya interaction in room-temperature chiral magnets hosting skyrmions
• Deciphering structural and magnetic disorder in the chiral skyrmion host materials Co${}_x$Zn${}_y$Mn${}_z$ ($x+y+z=20$)
• Mobile Néel skyrmions at room temperature: status and future
• Xclaim: a graphical interface for the calculation of core-hole spectroscopies
• Transmission x-ray microscopy at low temperatures - analyzing supercurrents with high spatial resolution

Cited by in corpus (16)

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• Skyrmion Alignment and Pinning Effects in a Disordered Multi-Phase Skyrmion Material Co8Zn8Mn4
• Metastable solitonic states in the strained itinerant helimagnet FeGe
• Anisotropic fractal magnetic domain pattern in bulk Mn${}_{1.4}$PtSn
• Spin wave stiffness and damping in a frustrated chiral helimagnet Co${}_8$Zn${}_8$Mn${}_4$ as measured by small-angle neutron scattering
• Chiral surface spin textures in Cu${}_2$OSeO${}_3$ unveiled by soft x-ray scattering in specular reflection geometry
• Robust metastable skyrmions with tunable size in the chiral magnet FePtMo${}_3$N
• Soft X-ray Vortex Beam detected by In-line Holography
• Topological melting of the metastable skyrmion lattice in the chiral magnet Co${}_9$Zn${}_9$Mn${}_2$
• Anisotropy-dependent decay of room temperature metastable skyrmions and a nascent double-$q$ spin texture in Co${}_8$Zn${}_9$Mn${}_3$
• Hybrid Bloch-Néel spiral states in Mn${}_{1.4}$PtSn probed by resonant soft x-ray scattering
• Observation of magnetic skyrmion lattice in Cr${}_{0.82}$Mn${}_{0.18}$Ge by small-angle neutron scattering
• Magnetic field-induced chiral soliton lattice in the bulk magnetoelectric helimagnet Cu${}_2$OSeO${}_3$