Author(s): Ma Zhou, Rui Zhang, Jiangpeng Sun, Wen-Kai Lou, Dong Zhang, Wen Yang, and Kai ChangMultiband k⋅p Hamiltonians near the high symmetric points in the Brillouin zones of two-dimensional (2D) materials are widely used to predict and understand the unique transport and optical properties of 2D materials. Based on the crystal symmetry of 2D materials, the authors develop a multiband k⋅p Hamiltonian for monolayer GaSe and InSe using the theory of invariants. The authors establish the relationship between the crystal lattice symmetry and the Hamiltonian matrix elements, accounting for spin-orbit interaction and strain. The work provides a systematic way to construct the relevant multiband k⋅p Hamiltonian for various monolayer and few-layer materials.[Phys. Rev. B 96, 155430] Published Wed Oct 11, 2017
Published in: "Physical Review B".