Structural investigation of the quasi-one-dimensional topological insulator Bi${}_4$I${}_4$

C. David Hinostroza, Leandro Rodrigues de Faria, Gustavo H. Cassemiro +4

The bismuth-halide Bi${}_4$I${}_4$ undergoes a structural transition around $T_P\sim 300$K, which separates a high-temperature $\beta$ phase ($T>T_P$) from a low-temperature $\alpha$ phase ($T<…