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The Si L2,3 valence band (VB) spectrum for the Au0.67Si0.33 alloy was first studied using the soft X-ray emission spectroscopy (SXES) technique under electron beam irradiation. A clear modification was observed in the Si L2,3 valence band spectrum for the Au-Si alloy of that for a Si Single crystal, which made it possible for us to discuss the Si s VB density of state (DOS). It is concluded that a significant amount of the Si(3s) originated electronic state is included in the upper half of the VB-DOS of the Au-Si alloy due to Au-Si bond formation.
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Watabe et al. (1991) studied this question.
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