Mirror real Chern insulator in two and three dimensions
Mirror real Chern insulator in two and three dimensions
A real Chern insulator (RCI) featuring a real Chern number and a second-order boundary mode appears in a two-dimensional (2D) system with the space-time inversion symmetry $(\mathcal{PT})$. Here, we propose a kind of RCI: the mirror real Chern insulator (MRCI), which emerges from the system having additional horizontal mirror symmetry …