Valence band-anticrossing in GaP${}_{1-x}$Bi${}_x$ dilute bismide alloys: giant bowing of the band gap and spin-orbit splitting energy

Zoe L. Bushell, Christopher A. Broderick, Lukas Nattermann +5

Using spectroscopic ellipsometry measurements on GaP${}_{1-x}$Bi${}_x$/GaP epitaxial layers up to $x=3.7$% we observe a giant bowing of the direct band gap ($E_g^{\Gamma }$) and valence…