Far-Infrared Magneto-Absorption of the Nonequilibrium Electron System in Indium Phosphide

Abstract
Measurements of the far-infrared cyclotron resonance of conduction electrons and the Zeeman absorption of donors in a MOCVD grown InP have been carried out at 4.2 K under photo- and electric field-excitations. It is found that the effective mass of the electron and the donor binding energy arem*=(0.0817±0.0004)m0andEb=7.6 meV, respectively. The electric field dependence of the resonance intensity can be explained in terms of impact ionization of the donor electrons. From time-resolved experiments, both the apparent lifetime and the scattering time of photoexcited electrons are also obtained.

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