Researchers from the University of Gothenburg have succeeded to produce spin wave overtones for the first time, which could enable faster wireless data communication based on spintronics devices.

Spintronic oscillators are devices in which spin waves are used to generate microwave signals in the gigahertz range. The new research shows how it is possible to produce spintronic oscillators that strengthen spin wave signals in several steps. This makes it possible to generate very high microwave frequencies with short wavelengths for use in spintronics and magnonics.