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- W1995200445 abstract "The surface band dispersions of Ge(111)c(2×8) and Ge(111):As 1×1 were determined experimentally using angle resolved photoemission. The clean c(2×8) reconstructed Ge(111) surface exhibited a surface dispersion with a 2×2 periodicity, suggesting that the surface has a 2×2 local geometry. Addition of As to the surface converted the surface symmetry to 1×1 and produced a strongly dispersing surface state with a bandwidth of 1.7 eV. Energy minimization calculations based on the first principles pseudopotential method and the local density approximation were used to determine the structure of Ge(111):As 1×1. The dispersion of the lone pair band was calculated and compared to the experimental results. The agreement found between experiment and theory allows us to conclude that arsenic interaction with the Ge(111) surface results in the replacement of the outer Ge layer with a single As layer." @default.
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- W1995200445 date "1986-05-01" @default.
- W1995200445 modified "2023-10-18" @default.
- W1995200445 title "Surface band dispersion of Ge(111)c(2×8) and Ge(111):As 1×1" @default.
- W1995200445 doi "https://doi.org/10.1116/1.573575" @default.
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