Hybrid magnetization dynamics in ${\text{Cu}}_{\text{2}}{\text{OSeO}}_{\text{3}}$/$\mathrm{NiFe}$ heterostructures

Abstract

We investigate the coupled magnetization dynamics in heterostructures of a single crystal of the chiral magnet $\mathrm{C}{\mathrm{u}}_2\mathrm{OSe}{\mathrm{O}}_3$ (CSO) and a polycrystalline ferromagnet $\mathrm{NiFe}$ (Py) thin film using broadband ferromagnetic resonance (FMR) at cryogenic temperatures. We observe the excitation of a hybrid mode (HM) below the helimagnetic transition temperature of CSO. This HM is attributed to the spin dynamics at the CSO/Py interface. We study the HM by measuring its resonance frequencies for in plane rotations of the external magnetic field. We find that the HM exhibits dominantly four-fold anisotropy, in contrast to the FMR of CSO and Py.

References in corpus (7)

• Emergent Phenomena Induced by Spin-Orbit Coupling at Surfaces and Interfaces
• Observation of two independent skyrmion phases in a chiral magnetic material
• Low spin wave damping in the insulating chiral magnet Cu${}_2$OSeO${}_3$
• Microwave spectroscopy of the low-temperature skyrmion state in Cu2OSeO3
• Tunable Cooperativity in Coupled Spin--Cavity Systems
• Electrically driven spin torque and dynamical Dzyaloshinskii-Moriya interaction in magnetic bilayer systems
• Growth and helicity of non-centrosymmetric Cu${}_2$OSeO${}_3$ crystals

Cited by in corpus (1)

• Coupling of ferromagnetic and antiferromagnetic spin dynamics in Mn${}_2$Au/NiFe thin-film bilayers