Abstract
Magnetophonon resonance effect has been investigated in p-InSb to determine the light-hole effective mass in the temperature range from 77 to 150 K. Two different series of oscillations arising from Landau levels of two spin series ( a and b ) are observed. The light-hole mass is 0.0158±0.0005 m 0 at 77 K and decreases with increasing temperature. Magnetophonon resonance associated with the transition of hot holes at higher Landau levels to acceptor states by the emission of LO phonons has been observed for the first time at T =40 K and analysis yields the binding energy of the acceptor ground states in a magnetic field. Calculations based on the effective mass approximation show a reasonable agreement with the present results. The observed difference in the oscillation amplitudes between spin- a and - b series is explained in terms of the mixing of the wave functions of the light- and heavy-hole bands.
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