M. Schubert et al., DIRECT-GAP REDUCTION AND VALENCE-BAND SPLITTING OF ORDERED INDIRECT-GAP ALINP2 STUDIED BY DARK-FIELD SPECTROSCOPY, Physical review. B, Condensed matter, 54(24), 1996, pp. 17616-17619
The order-dependent valence-band splitting and direct-gap reduction in
spontaneously ordered indirect-gap AlInP2 are determined by dark-fiel
d spectroscopy at room temperature. Similar to direct-gap GaInP2 both
parameters depend on the degree of long-range CuPtB-type order. We obt
ain the direct gap for disordered and the order induced changes of the
spin-orbit splitting and the crystal-field splitting normalized to th
e direct-gap change for perfectly ordered AlInP2.