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- W2056574236 abstract "Abstract Using the NRL-tight binding method, we investigate the electronic structure of the unrelaxed Cu 3 Au(1 1 1) surface. The tight binding parameters were determined by fitting to LDA calculations and found to reproduce the surface energy, bulk elastic constants and bulk phonon modes. The surface electronic band structure shows electronic states at the center of the Brillouin zone, within −0.1 Ry of the Fermi level, in agreement with available photoemission data. For these states, we give an interpretation and characterization of the contributions of the s, p and d electrons of the Cu and Au atoms. Charge calculations on each atom indicate that upon formation of Cu 3 Au there is charge transfer from the Au atoms to the Cu atoms in agreement with previous X-ray experiments. The Cu 3 Au(1 1 1) surface atoms are found to gain charge compared to the bulk system, and the Au atoms regain some of the charge that they lost upon formation of bulk Cu 3 Au. Despite the fact that this tight binding Hamiltonian was fitted to bulk properties of the Cu 3 Au system, it is able to accurately describe the main features of the Cu 3 Au(1 1 1) surface, suggesting that this method is reliable for studying binary intermetallic alloy surfaces." @default.
- W2056574236 created "2016-06-24" @default.
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- W2056574236 date "2003-10-01" @default.
- W2056574236 modified "2023-10-10" @default.
- W2056574236 title "Electronic structure of the Cu3Au(111) surface" @default.
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- W2056574236 doi "https://doi.org/10.1016/s0169-4332(03)00592-0" @default.
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