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.
@article{arxiv.2301.13468,
title = {Complete identification of spin-wave eigenmodes excited by parametric pumping in YIG microdisks},
author = {Titiksha Srivastava and Hugo Merbouche and Igor Ngouagnia Yemeli and Nathan Beaulieu and Jamal Ben Youssef and Manuel Munoz and Ping Che and Paolo Bortolotti and Vincent Cros and Olivier Klein and Soraya Sangiao and Jose Maria De Teresa and Sergej Demokritov and Vladislav Demidov and Abdelmadjid Anane and Claudio Serpico and Massimiliano d'Aquino and Gregoire de Loubens},
journal= {arXiv preprint arXiv:2301.13468},
year = {2023}
}