Dzyaloshinskii–Moriya-Interaction allows magnon-magnon coupling in hybridperovskites ncstate NatureComms
) are the effective fields that each sublattice experiences due to the applied external magnetic field; exchange field; anisotropy term; and the DMI. We show is nonzero, an off-diagonal termare the bare optical and acoustic mode frequencies. We found that the experimentally measured coupling strength leads to a.
The DMI field also accounts for the presence of optical modes in the transverse pumping configuration and the ‘dark’ optical mode at high fields. The antisymmetric nature of the DMI manifests as an effective microwave fieldthat has opposite signs as experienced by the different spin sublattices. The application of a spatially uniform microwave field naturally exerts a torque on each sublattice which is in the same direction for the two sublattices and drives their in-phase motion.
Our results demonstrate the possibilities of layered 2D HOIP materials for strong and tunable hybrid magnonics by utilizing their low-dimensional magnetic dynamics and chemical versatility.
France Dernières Nouvelles, France Actualités
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