Topological features of quantum transport in bi(1-x)Sb(x) (0=x=0.2) bicrystals

摘要

High-quality Bi1-xSbx (0 0, as expected for the massless Dirac fermions, while in crystallites and some twisting CIs with an increased degree of imperfection, electronic states are of the Schrodinger type, since n takes integer values. At Sb concentrations of x similar to 0.04, the high-field thermomagnetic phenomena of CI layers exhibit behavior of the 3D topological semimetals, whereas in bicrystals with 0.07 <= x <= 0.2 they manifest typical features of the 3D topological insulators.