Magnetic field effects on microwave harmonic generation in n-InSb

The effect of a magnetic field on the generation of microwave harmonics in n-InSb is investigated by considering the energy dependences of carrier mass and relaxation time as the sources of nonlinearity. The generated harmonics show a common maximum at ω_e0=2 × 10¹² rad s⁻¹ for ω=15 × 10¹⁰ rad s⁻¹; other resonances are not marked. However, the helicon effects are much pronounced. The amplitude of the third harmonic helicon mode increases with increasing magnetic field, while other modes of harmonics show a decrease.