Synthesis, characterization and physical properties of layered   bismuthide PtBi$_2$
  We report details of single crystal growth of stoichiometric bismuthide PtBi$_2$ whose structure consists of alternate stacking of Pt layer sandwiched by Bi bilayer along the $c$-axis. The compound crystallizes in space group P-3 with a hexagonal unit cell of $a$=$b$=6.553$\AA$, $c$=6.165$\AA$. The magnetization data show opposite sign for fields parallel and perpendicular to the Pt layers, respectively. The $T$-dependent resistivity is typical of a metal and the magnetic response shows clear two types of charge carriers and the validity of the semi-classical Kohler's rule. Its physical properties was discussed in comparison with recently proposed topological superconductor $\beta$-PdBi$_2$. 
C. Q. Xu, X. Z. Xing, Xiaofeng Xu, L. Q. Che, Bin Chen, Xin Lu,   Jianhui Dai, Z. X. Shi
cond-mat.str-el cond-mat.supr-con