Abstract
Magneto-optical studies were performed on a Cd0.88Mg0.12Te/Cd0.97Zn0.03Te heterostructure in which the CdMgTe barrier was δ-doped with iodine donors and the CdZnTe channel was δ-doped with nitrogen acceptors. The photoluminescence spectrum was dominated by a line with an energy close to that of the CdMgTe barrier which is interpreted as a result of donor–acceptor transitions. Stokes parameters polarisation spectroscopy showed that the line was purely circularly but very weakly polarised (8% in 6 T). It was proposed that this weak degree of polarisation comes from mixing of impurity levels by a strong electric field present in the investigated structure.
Published Version
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