کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1612316 | 1516306 | 2014 | 4 صفحه PDF | دانلود رایگان |
• We report the dielectric function ε of AlP from 0.74 to 6.54 eV.
• The critical points (CPs) in the E2 spectral range are important for band-structure analysis.
• We extract ε of AlP, using the multilayer parametric model.
• The CP energies are obtained from numerically calculated second-energy-derivatives.
• We identify these CPs from the linear augmented Slater-type orbital method.
We report the room-temperature dielectric function ε of AlP from 0.74 to 6.54 eV obtained by in situ spectroscopic ellipsometry. Measurements were done on a 1.2 μm thick film grown on (0 0 1) GaAs by molecular beam epitaxy, with ε extracted using a multilayer parametric model. Critical point energies of features in the ε spectra were obtained from numerically calculated second-energy-derivatives, and their Brillouin-zone origins identified by band-structure calculations done using the linear augmented Slater-type orbital method.
Journal: Journal of Alloys and Compounds - Volume 587, 25 February 2014, Pages 361–364