Interaction between counter-propagating quantum Hall edge channels in the 3D topological insulator BiSbTeSe${}_2$

Chuan Li, Bob de Ronde, Artem Nikitin +4

The quantum Hall effect is studied in the topological insulator BiSbTeSe${}_2$. By employing top- and back-gate electric fields at high magnetic field, the Landau levels of the Dirac…