8 research outputs found
Thermoelectric materials based on anion-substituted solid solutions in the Pb,Bi‖Se,Te ternary reciprocal system
Physical-chemical and thermoelectric properties of complex bismuth and lead chalcogenides and their solid solutions
Atom-specific spin mapping and buried topological states in a homologous series of topological insulators
A topological insulator is a state of quantum matter that, while being an insulator in the bulk, hosts topologically protected electronic states at the surface. These states open the opportunity to realize a number of new applications in spintronics and quantum computing. To take advantage of their peculiar properties, topological insulators should be tuned in such a way that ideal and isolated Dirac cones are located within the topological transport regime without any scattering channels. Here we report ab-initio calculations, spin-resolved photoemission and scanning tunnelling microscopy experiments that demonstrate that the conducting states can effectively tuned within the concept of a homologous series that is formed by the binary chalcogenides (Bi(2)Te(3), Bi(2)Se(3) and Sb(2)Te(3)), with the addition of a third element of the group IV