Band gap anomaly and topological properties in lead chalcogenides
Nie Simin1, Xu Xiao Yan1, Xu Gang1, †, , Fang Zhong1, 2
       

Non-SOC band structures of PbX. The red lines and the blue dots are obtained from HSE03 calculations and TB model fitting respectively. (a) PbS, (b) PbSe, (c) PbTe, (d) PbPo.