Tuning insulator-semimetal transitions in 3D topological insulator thin films by inter-surface hybridization and in-plane magnetic fields

Yang Xu, Guodong Jiang, Ireneusz Miotkowski +2

A pair of Dirac points (analogous to a vortex-antivortex pair) associated with opposite topological numbers (with $\pm \pi$ Berry phases) can be merged together through parameter tuni…