Speaker
Description
Quasistatic studies on artificial quasicrystals reported exotic properties such as knee anomalies in the magnetic hysteresis. Spin wave resonances may help to further understand their exotic properties.
We fabricated interconnected networks of nanobars (810 nm long, 130 nm wide) from 25 nm thick Permalloy and arranged them on Penrose P2, P3, and Ammann quasicrystal lattices. Performing angular dependent broadband spectroscopy in the GHz frequency regime we observed systematic and reproducible spin wave resonances in the switching regime. Combined with micromagnetic simulations and X-ray photoemission electron microscopy we discuss our experimental results in view of reprogrammable magnonic devices. *Research supported by SNF (#163016) and DFG (TRR80-F7).
