Abstract
Time-resolved far-infrared magnetospectroscopic studies of the photoconductive response of very-high-purity (\ensuremath{\mu}\ensuremath{\gtrsim}${10}^{5}$ ${\mathrm{cm}}^{2}$ ${\mathrm{V}}^{\mathrm{\ensuremath{-}}1}$ ${\mathrm{s}}^{\mathrm{\ensuremath{-}}1}$) n-type InP are reported from 2 to 20 K using a pulse-slice laser. The decay of the photoconductive response is studied for a variety of sample temperatures and compensation ratios for resonant 1s-2${p}_{+}$ and cyclotron resonance conditions. Decay schemes are proposed to account for the observed behavior of the lifetimes as a function of magnetic field. A calculation of the transition rates for acoustic-phonon-assisted decay in a magnetic field is presented for the decay channels proposed.
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