Magneto-optical studies of excitons bound to Ag and Cu acceptors in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi></mml:math>-type CdTe

Abstract

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 $J=\frac{1}{2}$ in ${T}_{d}$ symmetry. The relevant electron $g$ value is ${g}_{e}=\ensuremath{-}1.77\ifmmode\pm\else\textpm\fi{}0.02$ for the electron, and $K=+0.61\ifmmode\pm\else\textpm\fi{}0.04$ and $L=\ensuremath{-}0.04\ifmmode\pm\else\textpm\fi{}0.02$ 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.