Electronic, optical and sodium K edge XANES in disodium helide: a DFT study
R. D. Eithiraj
Abstract:The ground-state properties of the disodium helide (Na2He) in the cubic structure was calculated using the WIEN2k package within GGA, LDA, and mBJ potentials. From our results, the GGA and LDA predict the material to be semiconductor, while mBJ predicts the material to be insulator. The calculated results from the electronic structure show that Na2He is a direct bandgap semiconductor. Excitonic properties were studied and the results provide Mott-wannier type excitonic behavior of the material. The optical pro… Show more
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