Enhanced electron-phonon coupling at the Mo and W(110) surfaces induced by adsorbed hydrogen

Details Enhanced electron-phonon coupling at the Mo and W(110) surfaces induced by adsorbed hydrogen Enhanced electron-phonon coupling at the Mo and W(110) surfaces induced by adsorbed hydrogen

1995-10-30

arxiv.org/abs/mtrl-th/9510004v1

Physics

Condensed Matter

Materials Science

4 Pages, RevTeX

Scientific paper

The possible occurrence of either a charge-density-wave or a Kohn anomaly is governed by the presence of Fermi-surface nesting and the subtle interaction of electrons and phonons. Recent experimental and theoretical investigations suggest such an effect for the hydrogen covered Mo and W(110) surfaces. Using density-functional theory we examine the electronic structure and the electron-phonon coupling of these systems. Besides good agreement with the experimental phonon frequencies our study provides a characterization and quantitative analysis of an unusual scenario determining the electronic, vibrational, and structural properties of these surfaces.

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