Chirality-2 fermion induced anti-Klein tunneling in a two-dimensional checkerboard lattice
Chirality-2 fermion induced anti-Klein tunneling in a two-dimensional checkerboard lattice
The quantum tunneling effect in a two-dimensional (2D) checkerboard lattice is investigated. By analyzing the pseudospin texture of the states in a 2D checkerboard lattice based on the low-energy effective Hamiltonian, we find that this system has a chiral symmetry with chirality equal to 2, although compared with regular chiral …