Exchange-dominated Standing Spin Wave Excitations under microwave irradiation in Ni80Fe20 Thin Films
arXiv:1310.6108
Abstract
We investigated the microwave-assisted DC voltages of ferromagnetic resonances and exchangedominated standing spin wave excitations in two different in-plane magnetized permalloy thin films via homodyne detection. The line shapes of ferromagnetic resonance spectra and the dispersion curves of ferromagnetic resonance and standing spin wave are in agreement of previous studies, while further investigations of DC voltage spectra for these two excitations reveal that 1. unlike ferromagnetic resonance signals, the anti-symmetrical line shapes of standing spin wave excitations are not depend on the electromagnetic relative phase of assisted microwave, and 2. linewidths of their DC voltage spectra are distinct. The complicated spin dynamics of standing spin wave is consequently discussed by applying Landau-Lifshitz-Gilbert equation in term of exchange interaction.
References in corpus (4)
- Electrical detection of spin pumping due to the precessing magnetization of a single ferromagnet
- Microwave photovoltage and photoresistance effects in ferromagnetic microstrips
- Large cone angle magnetization precession of an individual nanomagnet with dc electrical detection
- Electrical detection of spin pumping: dc voltage generated by ferromagnetic resonance at ferromagnet/nonmagnet contact