Interband, intraband and spin-flip polarons in the zero-gap semiconductor Hg1-xMnxTe

Abstract

A theory of resonant electron-optic phonon interaction in a zero-gap semiconductor in the presence of an external magnetic field has been developed. Three distinctly different cases have been considered: (1) interband spin-conserving case (initial and final electron states in the conduction and heavy-hole bands with the same spin orientation); (2) interband spin-flip case (initial and final states in the conduction and heavy-hole valence bands with different spin orientations); (3) intraband spin-conserving case (initial and final states in the conduction band).