Integrating high-k ferroelectric oxides like BaTiO3(BTO) with 2D semiconductors offers compelling prospects for next-generation non-volatile memory and neuromorphic computing. Yet, practical implementation is hindered by substrate-induced lattice mismatch in conventional growth, as well as mechanical deformation and defect-induced leakage currents when utilizing freestanding van...
Two-dimensional (2D) tetragonal group-V materials have attracted considerable interest, while their topological properties remain largely unexplored. Using density functional theory, topological quantum chemistry theory, and a tight-binding model, we show that monolayer tetragonal antimonene (T-Sb) realizes a higher-order topological insulator (HOTI). A layer-dependent analysis reveals an...
