MIDINFRARED INTERBAND MAGNETOABSORPTION IN HGTE CDTE SUPERLATTICES/

We demonstrate that interband magneto-absorption in the mid-infrared r egime is a powerful technique to characterize the electronic propertie s of HgTe/CdTe superlattices. The rich optical spectra permit a close comparison with theoretically evaluated band structures and provide a valuable feedback for growth. The experimentally obtained band-gap ene rgies between hole and electron subbands for the HgTe/CdTe superlattic e structure considered here are in good agreement with published value s calculated for a valence-band offset of 350 meV.