First-principles total-energy calculations have been performed for the Mo(001) surface. Subsequent tight-binding calculations of the surface-phonon dispersion curves for the unreconstructed surface show that Fermi-surface nesting of surface states leads to a softening of surface modes near M̄, with the maximum instability very close to the wave vector of the observed incommensurate reconstruction. Our results disagree strongly with the prevailing short-ranged force models for the incommensurate reconstruction on Mo(001).
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Wang et al. (1988) studied this question.
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