Physical properties of KMgBi single crystals
  KMgBi single crystals are grown by using the Bi flux successfully. KMgBi shows semiconducting behavior with a metal-semiconductor transition at high temperature region and a resistivity plateau at low temperature region, suggesting KMgBi could be a topological insulator with a very small band gap. Moreover, KMgBi exhibits multiband feature with strong temperature dependence of carrier concentrations and mobilities. 
Xiao Zhang, Shanshan Sun, and Hechang Lei
cond-mat.mtrl-sci