HOT-ELECTRON MAGNETOTRANSPORT IN NARROW-GAP SEMICONDUCTORS IN QUANTUMMAGNETIC-FIELD

The longitudinal magneto-transport in narrow-gap semiconductor InSb un der a quantum magnetic field at 42 K is investigated using the balance equation theory. The nonparabolicity of the energy band and scatterin gs due to ionized impurities, acoustic and polar optical phonons are t aken into account. All the subbands occupied by electrons are included in the calculation. The longitudinal magnetic field reduces the drift velocity and leads to a decrease of the electron temperature. The dri ft mobility decreases with increasing magnetic field. The drift veloci ty under the extreme-quantum-limit assumption is completely different from that taking into account all possible subbands occupied by electr ons.