Feature Behavior of Resistivity in Bi Foils Obtained by a Melt Spinning Method

Growth of Bi and Bi1−xSbx single crystals with specific properties

“…A similar pattern of temperature dependence of the resistivity ρ was also observed in Bi foils with 9 μm and 11 μm thickness due to bilayer exfoliation. 34 These results provided a supplemental evidence of Bi 1−x Sb x single crystals as 3D topological insulators, which was discovered earlier. 20,21 An impressive performance has been achieved with Bi 0.91 Sb 0.09 single crystals doped with Te at 10 −4 at% and Sn at 1.5 × 10 −4 at% in terms of high magneto-thermoelectric figures of merit, and magnetoresistance, respectively, due to their properties as 3D topological insulators.…”

“…Therefore, before using the Bi for crystal growth, it was purified by drop purification in a vacuum, followed by directional crystallization. 34…”

Photovoltaic effect in metal foils and crystals of topological insulators

“…Before using the Bi charge, it was purified by drop cleaning in vacuum. 31 Drop cleaning and crystallization were performed in quartz glass ampoules, evacuated up to 10 −6 mbar. Bismuth was placed in the top quartz glass ampoule.…”

“…5b and 4g, respectively. 31 Such laser illumination has a larger thermal effect on exfoliation of Bi(111) bilayers due to the lower reflection of radiation from the foil surface than for laser illumination of the top surface of Bi foils. The surface state spinpolarization of Bi(111) surfaces was discovered and analyzed in detail at low temperatures.…”