Quantum oscillations of the Hall coefficient of the narrow-gap semiconductor Pb0.82Sn0.18Te in weak magnetic fields
Lashkarev G.V., Dmitriev A.I., Radchenko M.V., Tovstyuk K.D.
Quantum oscillations of the Hall coefficient were observed in weak magnetic fields, starting with 10 Oe, in nand ρ-type solid solutions of Pb0 82Sno.18Te at 4.2 °K. The results are attributed to singularities of the band spectrum, which lead to the appearance of an unusual group of carriers with extremely low effective mass m * S 1 χ 10 4 m0, which is smaller by more than two orders of magnitude than the mass of the ordinary carriers.