Abstract
The main directions of experimental studies of topological insulators based on bismuth and antimony chalcogenides, which are related to the possibility of using the properties of the surface states of Dirac fermions in thermoelectricity, have been considered. The results of studies of the Van der Waals interlayer surface (0001) in single-crystal layered films of solid solutions of n- and p-type conductivity with substitutions of atoms in Bi and Te sublattices performed by micro-Raman spectroscopy, scanning tunneling microscopy, and scanning tunneling spectroscopy have been discussed. The oscillations of galvanomagnetic effects in strong magnetic fields and thermoelectric properties measured under normal conditions and at high pressures have been analyzed. The compositions of solid solutions in which the contribution of the surface states of Dirac fermions increases because of an increase in the surface concentration of fermions and the Fermi velocity depending on the energy of the Dirac point, the value of the Seebeck coefficient, and the power parameter have been determined.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call