Phys.org July 24, 2023
Magnons undergo nonlinear multimode scattering processes at large input powers. In experiments and simulations, an international team of researchers (Germany, France) showed that the interaction between magnon modes of a confined magnetic vortex could be harnessed for pattern recognition. They studied the magnetic response to signals comprising sine wave pulses with frequencies corresponding to radial mode excitations. The amplitudes of three-magnon scattering results in the excitation of different azimuthal modes depended strongly on the input sequences. They showed that recognition rates as high as 99.4% could be attained for four-symbol sequences using the scattered modes, with strong performance maintained with the presence of amplitude noise in the inputs… read more. Open Access TECHNICAL ARTICLEÂ
Electromagnetic fields excite oscillations in a magnetic vortex… Credit: HZDR / H. Schultheiß