Fig. 1: Spin-wave transmission in a YIG film with a single ferromagnetic metal stripe.
From: Nanoscale magnonic Fabry-Pérot resonator for low-loss spin-wave manipulation
a Schematic of the experimental geometry. Spin waves are excited in a nanometer-thick YIG film using a microwave antenna and are detected by a second antenna or imaged by TR-MOKE microscopy. A magnetic bias field (Hext) saturates the magnetization of YIG and the ferromagnetic metal parallel to the stripe. b Spin-wave transmission spectra (amplitude of S12 and S21) recorded on an uncovered 100-nm-thick YIG film (orange) and the same YIG film with a 730-nm-wide CoFeB stripe (blue). μ0Hext = +10 mT. c Contour plot of the S12 amplitude as a function of magnetic field. d Spin-wave transmission spectra (amplitude of S12) recorded on a 100-nm-thick YIG film with a 1.1-μm-wide and a 6.0-μm-wide CoFeB stripe (blue curves in top and bottom panel, respectively). Reference measurements on uncovered YIG films are shown in orange.
