Bistable nanomagnet as programable phase inverter for spin waves

Raw data associated to the manuscript “Bistable nanomagnet as programable phase inverter for spin waves”, Applied Physics Letters 118, 000000 (2021), DOI: https://doi.org/10.1063/5.0048825 Information about file formats and measurement parameters are described in text files in the specific folders. For micromagnetic simulations Mumax 3.10 was used. The simulation scripts (*.mx3 files) and exemplary plotting scripts in Python 3.9 (*.py files) are included. Paper abstract: To realize spin wave logic gates, programable phase inverters are essential. We image using phase-resolved Brillouin light scattering microscopy propagating spin waves in a one-dimensional magnonic crystal consisting of dipolarly coupled magnetic nanostripes. We demonstrate phase shifts upon a single nanostripe of opposed magnetization. Using micromagnetic simulations, we model our experimental finding in a wide parameter space of bias fields and wave vectors. We find that low-loss phase inversion is achieved, when the internal field of the oppositely magnetized nanostripe is tuned such that the latter supports a resonant standing spin wave mode with an odd quantization number at the given frequency. Our results are key for the realization of phase inverters with optimized signal transmission.We acknowledge the financial support by the Swiss National Science Foundation (SNSF) via grant number 163016