Magnetopolaron interactions in n-type indium phosphide -: art. no. 245207

Broadband far-infrared absorption spectroscopy is used to investigate n-type indium phosphide in magnetic fields of up to 30 T. The large energy range (similar or equal to 2-14 Ry) and the large magnetic field range (0 <=gamma < 3) employed permit the observation of a rich variety of magnetopolaron interactions. We report on the magnetopolaron effect for bound states in InP, beginning with the coupling of the 2p(+) state with the 1s+LO phonon state. We further observe the magnetopolaron effect associated with the metastable state (210). In addition we report (i) the re-emergence of the (210) impurity state transition beyond the LO phonon manifold, (ii) the possible coupling of an impurity transition with the 1s+2LO phonon state, and (iii) both low- and high-energy one-phonon transitions of impressive richness and detail.