Pressure-induced phase transition in Bi${}_2$Se${}_3$ at 3 GPa: electronic topological transition or not?

Achintya Bera, Koushik Pal, D V S Muthu +2

In recent years, a low pressure transition around P $\sim$ 3 GPa exhibited by the A${}_2$B${}_3$-type 3D topological insulators is attributed to an electronic topological transition (E…