Researchers from the Helmholtz-Zentrum demonstrated that topological insulators are suitable for Spintronics applications. The researchers showed how the spins of the electrons in topological insulators can be controlled.
The researchers used circularly-polarized laser to investigate samples of antimony-telluride, a topological insulator. Using the rotational direction of the laser, it is possible to initiate and direct spin-polarised current. The researchers also succeeded to change the orientation of the spins.