On Monday, February 3th 2024, we have the pleasure to welcome in SPINTEC Grégoire De Loubens from CEA Iramis. He will give us a seminar at 14:00 entitled :
Nonlinear interactions between parametrically excited spin-wave modes in a YIG microdisk
Place : IRIG/SPINTEC, auditorium 445 CEA Building 10.05 (presential access to the conference room at CEA in Grenoble requires an entry authorization. Request it before 28th at admin.spintec@cea.fr)
video conference : https://univ-grenoble-alpes-fr.zoom.us/j/98769867024
Meeting ID: 987 6986 7024
Passcode: 025918
Abstract : Spin waves hold great promise for energy-efficient hardware for information processing because of their low-energy and small wavelength at GHz frequencies. Furthermore, their non-linear properties make them interesting for neuromorphic computing. In this work, we are interested in determining the non-linear phenomena involved when multiple spin-wave modes are excited in a confined magnetic system, as well as ways to control and model these non-linear interactions. We use frequency multiplexing to parametrically excite two modes simultaneously and probe their mutual nonlinear frequency shift of the two modes, the detuning between the excitation frequencies and twice the resonance frequencies of the modes, and the timing of the excitation pulses. These results open up interesting perspectives for nonlinear magnonics and analog spin-wave computing.
