Figure 3
From: Terahertz conductivity of topological surface states in Bi1.5Sb0.5Te1.8Se1.2
(a) Real conductance G1(ω) at 30 K. Inset shows the imaginary conductance G1(ω). (O) = data. Solid lines = Drude (green) and Lorentz (blue) contributions and the fit to data (red). (b) Low-frequency real conductivity σ1 versus temperature. (O) = data. Solid line = fit to Eq. (3).
