Fig. 2: Crystal structure and magneto-thermoelectric properties.
From: A magneto-thermoelectric with a high figure of merit in topological insulator Bi88Sb12
a, Crystal structure of Bi-rich Bi1–xSbx. The bottom panel shows the optical image of the as-grown Bi88Sb12 single crystal with a shining cleavage plane in the (111) orientation. b–f, Seebeck coefficient (b), resistivity (c), power factor (d), total thermal conductivity (e) and zT (f) as a function of magnetic field. Insets in b, c and e illustrate the directions of magnetic field B and temperature gradient ∇T or current I. The power factors and zT values show peak values at lower magnetic fields with decreasing temperature.
