Reprogrammable magnonic band structure of layered permalloy/Cu/permalloy nanowires
Reprogrammable magnonic band structure of layered permalloy/Cu/permalloy nanowires
Reprogrammability of magnonic band structure in layered permalloy/Cu/permalloy nanowires is demonstrated to depend on the relative orientation of the two layers magnetization. By using Brillouin light spectroscopy, we show that when the layers are aligned parallel two dispersive modes, with positive and negative group velocity, are observed while when the …