We present high-resolution angle-resolved photoelectron spectroscopy on Au(110). The unreconstructed surface shows a Shockley-type surface state at E₀=590 meV whereas on the (2×1) missing-row reconstructed surface no such surface state below EF can be detected. We performed relativistic local-density approximation calculations which agree well with our experimental data. Adsorption of 1 monolayer Ag on the (2×1) reconstructed surface results in a destruction to a (1×1) surface structure and a Shockley state appears at E₀=475 meV. Shifting down the surface state from just above to below EF by Na adsorption allowed to extrapolate a binding energy on the reconstructed surface of E₀=-120 meV above the Fermi level.
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Nuber et al. (2008) studied this question.
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