Description and purpose
The growth of information volume emphasizes the need of new concepts for energy-efficient and high-speed processing solutions. The use of degrees of freedom alternative to electric charge, as the electron spin, and the focus on topological materials are setting the path for a topological view of spintronics . The aim of BEAT is to control electrical transport in 3D topological insulators via long-range magnetic order , magneto-electricity and geometrical confinement.
Purpose
We aim to develop devices whose topological properties do not make use of magnetic fields and are instead robust to them. Magnetic TIs are ideal candidates for this purpose. A second route points to explore new materials strategies exploiting surface nanostructuring.
Expected results
In BEAT, we expect to elucidate magnetism in magnetic TIs and to image magnetic domains.The first result we expect to get refers to the nature of the domains and of the domain walls. Subsequently we aim to use electric fields to manipulate magnetic domains and topological states.
Achieved results
We have imaged magnetic domains in exfoliated Fe5GeTe2 and we have shown their intrinsic nature. We have also demonstrated manipulation in electric fields.
