"Deeply nonlinear excitation of self-normalized short spin waves" by Q. Wang, R. Verba, B. Heinz, M. Schneider, O. Wojewoda, K. Davidkova, K. Levcheko, C. Dubs, N. J. Mauser, M. Urbanek, P. Pirro, A. V. Chumak, Sci. Adv. 9, eadg4609 (2023)
Article 'Deeply nonlinear excitation of self-normalized short spin waves' by Qi Wang et al., Sci. Adv. 9, eadg4609 (2023) with respective datasets. Data presented in Exel format are sorted into folders according to the Figures sequence in the article. The nature of the datasets is described in the file's title. The article is partially funded by the Austrian Science Fund (FWF) via grant no. I 4696-N (Nano-YIG).
Spin waves are ideal candidates for wave-based computing, but the construction of magnetic circuits is blocked by a lack of an efficient mechanism to excite long-running exchange spin waves with normalized amplitudes. Here, we solve the challenge by exploiting a deeply nonlinear phenomenon for forward volume spin waves in 200-nm-wide nanoscale waveguides and validate our concept using microfocused Brillouin light scattering spectroscopy. An unprecedented nonlinear frequency shift of more than 2 GHz is achieved, corresponding to a magnetization precession angle of 55° and enabling the excitation of spin waves with wavelengths down to 200 nm. The amplitude of the excited spin waves is constant and independent of the input microwave power due to the self-locking nonlinear shift, enabling robust adjustment of the spin-wave amplitudes in future on-chip magnonic integrated circuits.