Hole mass measurement in p-type InP and GaP by submillimetre cyclotron resonance in pulsed magnetic fields

The first observation of cyclotron resonance in p-type InP is reported. The holes were thermally excited at 110 K and the resonance was observed at 337μm wavelength (HCN laser) using a pulsed magnetic field of 0–350 kG. The effective masses of the light and heavy holes in the 〈111〉 direction were found to be m∗L = 0.12 ± 0.01 m0, m∗H = 0.60 ± 0.02 m0 and in the 〈100〉 direction m∗L = 0.12 ± 0.01 m0, m∗H = 0.56 ± 0.02 m0. We obtain an estimate of the Dresselhaus parameters A = −5.04, |B| = 3.12, C2 = 6.57. We also report the effective masses for p-type GaP in the 〈111〉 direction as m∗L = 0.18 ± 0.02 m0, m∗H = 0.56 ± 0.04 m0.