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.
@article{arxiv.mtrl-th/9510004,
title = {Enhanced electron-phonon coupling at the Mo and W(110) surfaces induced by adsorbed hydrogen},
author = {Bernd Kohler and Paolo Ruggerone and Matthias Scheffler and Erio Tosatti},
journal= {arXiv preprint arXiv:mtrl-th/9510004},
year = {2008}
}