SPIN-DEPENDENT CONFINEMENT IN DMS-BASED HETEROSTRUCTURES

We describe the results of a magneto-optical study of a class of semic onductor heterostructures in which one of the constituent layers is a diluted magnetic semiconductor (DMS). The large magnetic band splittin gs of DMS materials result in spin-dependent confining potentials for electrons and holes which can be changed externally by varying the app lied magnetic field. The modifications in the band alignment result in changes, sometimes dramatic, of the optical properties in the vicinit y of the band gap.