Ferromagnetic resonance with magnetic phase selectivity by means of resonant elastic x-ray scattering on a chiral magnet

Abstract

Cubic chiral magnets, such as Cu${}_2$OSeO${}_3$, exhibit a variety of non-collinear spin textures, including a trigonal lattice of spin whirls, so-called skyrmions. Using magnetic resonant elastic x-ray scattering (REXS) on a crystalline Bragg peak and its magnetic satellites while exciting the sample with magnetic fields at GHz frequencies, we probe the ferromagnetic resonance modes of these spin textures by means of the scattered intensity. Most notably, the three eigenmodes of the skyrmion lattice are detected with large sensitivity. As this novel technique, which we label REXS-FMR, is carried out at distinct positions in reciprocal space, it allows to distinguish contributions originating from different magnetic states, providing information on the precise character, weight and mode mixing as a prerequisite of tailored excitations for applications.

arXiv comment18 pages, main text with appended supplementary material, 3 main figures, 1 supplementary figure

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Cited by in corpus (18)

• The 2020 Skyrmionics Roadmap
• Skyrmion Qubits: A New Class of Quantum Logic Elements Based on Nanoscale Magnetization
• Universal quantum computation based on nanoscale skyrmion helicity qubits in frustrated magnets
• Skyrmion Qubits: Challenges For Future Quantum Computing Applications
• Microwave spectroscopy of the low-temperature skyrmion state in Cu2OSeO3
• Dynamic Excitations of Chiral Magnetic Textures
• Skyrmion Helicity: Quantization and Quantum Tunneling Effects
• Direct observation of Néel-type skyrmions and domain walls in a ferrimagnetic DyCo${}_3$ thin film
• Nonlinear dynamics of topological ferromagnetic textures for frequency multiplication
• Spin structure relation to phase contrast imaging of isolated magnetic Bloch and Neel skyrmions
• Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction
• Optically excited spin dynamics of thermally metastable skyrmions in Fe${}_{0.75}$Co${}_{0.25}$Si
• Chiral surface spin textures in Cu${}_2$OSeO${}_3$ unveiled by soft x-ray scattering in specular reflection geometry
• Time-resolved measurement of spin excitations in Cu${}_2$OSeO${}_3$
• Short-wave magnons with multipole spin precession detected in the topological bands of a skyrmion lattice
• Observation of distorted tilted conical phase at the surface of a bulk chiral magnet with resonant elastic x-ray scattering
• Cu2OSeO3 Turns Trigonal with Structural Transformation and Implications for Skyrmions
• Helical spin dynamics in Cu${}_2$OSeO${}_3$ as measured with small-angle neutron scattering