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- W2050922011 abstract "We have performed first-principles calculations in order to analyze the influence of spatial orientation on the electronic band structure and optical properties of hydrogenated germanium quantum wires. A quantum confinement-induced direct band gap appears for the (110)-oriented wires, whereas the (100)- and (111)-oriented wires are characterized by an indirect band gap. For the same wire-effective size, an anisotropy in the fundamental band gap ${E}_{g}$ with respect to the wire orientation is observed. For (110)-oriented wires, the imaginary part of the dielectric function shows a pronounced peak in the visible energy range with strong dimensionality and polarization dependence." @default.
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- W2050922011 date "2004-07-26" @default.
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- W2050922011 title "Orientation effects in the electronic and optical properties of germanium quantum wires" @default.
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- W2050922011 doi "https://doi.org/10.1103/physrevb.70.035317" @default.
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