Fellow project: „Localized spin waves in periodic nanostructures“
In magnetic medium the waves of coherently processing magnetic moments can propagate. These waves (called spin waves) can transmit energy and information, similarly like other waves of different nature (e.g. electromagnetic waves or acoustic waves). Typical frequencies (in the range from fraction of GHz to hundreds of GHz) and wavelengths (in the range form hundreds to tens of nanometers, respectively) of spin waves are suitable for designing of miniaturized devices (called magnonic devices) operating on high frequency signals at nanometer scale. Thus, the systems, which use the spin waves for processing and transmitting information, can fill the gap between electronics and photonics. The one possible way to shape the propagation of spin waves is periodic Nano patterning of magnetic medium. In confined periodic nanostructures (like patterned wires or planes), we can additionally control the spin wave dynamics and localization at the edges or/and on the surfaces. The aim of the project is to investigate the magnonic defect, edge and surface modes. The special attention will be paid on topological edge modes which can exhibit robustness on scattering in the presence of structural imperfections.