Complete identification of spin-wave eigenmodes excited by parametric pumping in YIG microdisks

Abstract

We present the parametric excitation of spin-wave modes in YIG micro-disks via parallel pumping. Their spectroscopy is performed using magnetic resonance force microscopy (MRFM), while their spatial profiles are determined by micro-focus Brillouin light scattering (BLS). We observe that almost all the fundamental eigenmodes of an in-plane magnetized YIG micro-disk, calculated using a micromagnetic eigenmode solver, can be excited using the parallel pumping scheme, as opposed to the transverse one. The comparison between the MRFM and BLS data on one side, and the simulations on the other side, provides the complete spectroscopic labeling of over 40 parametrically excited modes. Our findings could be promising for spin-wave-based computation schemes, in which the amplitudes of a large number of spin-wave modes have to be controlled.

arXiv comment6 pages, 4 figures

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Cited by in corpus (5)

• Magnon-Skyrmion Hybrid Quantum Systems: Tailoring Interactions via Magnons
• Magnon confinement in an all-on-chip YIG cavity resonator using hybrid YIG/Py magnon barriers
• Mode-resolved micromagnetics study of parametric spin wave excitation in thin-film disks
• Short-wave magnons with multipole spin precession detected in the topological bands of a skyrmion lattice
• Stimulated magnon scattering by non-degenerate parametric excitation