Magneto-optical studies of excitons bound to Ag and Cu acceptors in p -type CdTe

The linear and quadratic Zeeman effects have been studied for two different neutral-acceptor---bound-exciton complexes, (Ag,X) and (Cu,X), in high-purity p-type CdTe. For both complexes, the results are consistent with a bound-exciton ground state J=1/2 in Td symmetry. The relevant electron g value is gₑ=-1.77±0.02 for the electron, and K=+0.61±0.04 and L=-0.04±0.02 for the hole parameters describing the isotropic and anisotropic Zeeman effects, respectively. The diamagnetic shift observed for the neutral- acceptor---bound-exciton complex is well explained in terms of the pseudodonor model.