Researchers at Aalto University have developed a new device for spintronics, which could be seen as a step towards using spintronics to make computer chips and devices for data processing and communication technology.
Schematic of the experimental geometry. Image from article
“If you use spin waves, it’s transfer of spin, you don’t move charge, so you don’t create heating,” says Professor Sebastiaan van Dijken, who leads the group that wrote the paper. The device the team made is a Fabry-Pérot resonator, a well-known tool in optics for creating beams of light with a tightly controlled wavelength. The spin-wave version made by the researchers in this work allows them to control and filter waves of spin in devices that are only a few hundreds of nanometres across.
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