Matches in SemOpenAlex for { <https://semopenalex.org/work/W2033541051> ?p ?o ?g. }
- W2033541051 abstract "A strong nonlinear pressure dependence of the optical absorption edge has been measured in defect chalcopyrites ${text{CdGa}}_{2}{text{Se}}_{4}$ and ${text{HgGa}}_{2}{text{Se}}_{4}$. The behavior is due to the nonlinear pressure dependence of the direct band-gap energy in these compounds as confirmed by ab initio calculations. Our calculations for ${text{CdGa}}_{2}{text{Se}}_{4}$, ${text{HgGa}}_{2}{text{Se}}_{4}$ and monoclinic $ensuremath{beta}{text{-Ga}}_{2}{text{Se}}_{3}$ provide evidence that the nonlinear pressure dependence of the direct band-gap energy is a general feature of adamantine ordered-vacancy compounds irrespective of their composition and crystalline structure. The nonlinear behavior is due to a conduction band anticrossing at the $ensuremath{Gamma}$ point of the Brillouin zone caused by the presence of ordered vacancies in the unit cell of these tetrahedrally coordinated compounds." @default.
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- W2033541051 date "2010-05-04" @default.
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- W2033541051 title "Nonlinear pressure dependence of the direct band gap in adamantine ordered-vacancy compounds" @default.
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- W2033541051 doi "https://doi.org/10.1103/physrevb.81.195201" @default.
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