Iron-doping of the topological insulator Sb2Te3 results in useful electronic and magnetic properties, quantified in a recent FLEET study at the University of Wollongong.
The researchers studied the magneto-transport properties of an iron-doped topological insulator (Fe-Sb2Te3).
After the material is doped via the addition of iron, its electronic structure changes significantly:
multiple response frequencies emerge, in contrast to the single frequency detected for Sb2Te3 in its pure form
carrier density and mobility is reduced.
"This improved understanding of the effects of doping on the topological insulator Sb2Te3 are critical to inform future possible use in low-energy electronics," explains project leader Xiaolin Wang.