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- W2052138997 abstract "The electronic structures of ${mathrm{AuGa}}_{2}$ and ${mathrm{PtGa}}_{2}$ have been studied with use of spectroscopic ellipsometry and the dielectric functions have been determined in the 1.2--5.5-eV region. Both compounds show interband absorption at low photon energies (1.3 eV). The interband absorption for ${mathrm{AuGa}}_{2}$ is strong at about 2 eV while that for ${mathrm{PtGa}}_{2}$ shows a broad structure in the range 2.5--4.5 eV, with a shoulder at 3.3 eV. The observed interband features in ${mathrm{ensuremath{epsilon}}}_{2}$ can be interpreted in terms of self-consistent relativistic band-structure calculations using the linear augmented-plane-wave method. The interband contribution to the imaginary part of the dielectric function ${mathrm{ensuremath{epsilon}}}_{2}^{mathit{b}}$ has been calculated including the effect of the electric dipole matrix elements. The overall agreement is good between the band calculations and the ellipsometry results in the 1.2--5.5-eV region for both the magnitude and the positions of the structures. Below 1.2 eV the calculational results for both compounds show interband absorption, which is also qualitatively suggested by the ellipsometry results." @default.
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- W2052138997 date "1990-11-15" @default.
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- W2052138997 title "Optical properties and electronic structures of the intermetallic compounds<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>AuGa</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>and<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>PtGa</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:…" @default.
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- W2052138997 doi "https://doi.org/10.1103/physrevb.42.8813" @default.
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