Model Hamiltonian for topological Kondo insulator SmB6
  Starting from the kp method in combination with first-principles calculations, we systematically derive the effective Hamiltonians that capture the low energy band structures of recently discovered topological Kondo insulator SmB6. Using these effective Hamiltonians we can obtain both the energy dispersion and the spin texture of the topological surface states, which can be detected by further experiments. 
Rui Yu, HongMing Weng, Xiao Hu, Zhong Fang and Xi Dai
cond-mat.mtrl-sci cond-mat.str-el