Crystal Structure and Electrical Properties of Alloys of the Bi2Se3 -Sb2Se3 System

Effect of Sb substitution on the topological surface states in Bi2Se3single crystals: a magneto-transport study

“…Independent abinitio calculations on the Bi 2-x Sb x Se 3 system by Liu et al [2] and Abdalla et al [3] determined the value of x c = 1.2, corresponding to the alloy composition Bi 0.8 Sb 1.2 Se 3 . However experimentally, the solid solubility of the Sb 2 Se 3 in Bi 2 Se 3 is less than 16 mol% [4] and it is therefore difficult to synthesize single phase crystals with Sb substitution required to observe the phase transition. The transport co-efficients viz.…”

Low-temperature transport properties of n-type layered homologous compounds Bi8−xSbxSe7

“…The non-linear evolution of with x bears some similarities with the variations in the electron concentration with the Sb content observed in the series Bi2-xSbxSe3. [54][55][56] Because Sb is isovalent with Bi, the variations in the electron density were ascribed to the influence of Sb on the type and concentration of defects that characterize tetradymite compounds. The concentration of Se vacancies that prevail in Bi2Se3 decreases upon increasing the Sb concentration up to about x = 0.1, resulting in lowered electron concentrations.…”