Quantum Hall effect on top and bottom surface states of topological insulator (Bi1−xSbx)2Te3 films
Quantum Hall effect on top and bottom surface states of topological insulator (Bi1−xSbx)2Te3 films
The three-dimensional topological insulator is a novel state of matter characterized by two-dimensional metallic Dirac states on its surface. To verify the topological nature of the surface states, Bi-based chalcogenides such as Bi2Se3, Bi2Te3, Sb2Te3 and their combined/mixed compounds have been intensively studied. Here, we report the realization of the …