Peierls Instability and Electron-Phonon Coupling in a One-dimensional Sodium Wire

Details Peierls Instability and Electron-Phonon Coupling in a One-dimensional Sodium Wire Peierls Instability and Electron-Phonon Coupling in a One-dimensional Sodium Wire

2006-06-22

arxiv.org/abs/cond-mat/0606567v1

Physics

Condensed Matter

Materials Science

Scientific paper

10.1016/j.cplett.2006.07.080

We have studied Peierls instability in an atomically thin wire of sodium atoms using first-principles density-functional methods. A Na wire has a stable uniform linear structure over a range of inter-atomic distances. At smaller inter-atomic distances it develops a zigzag distortion. At larger inter-atomic distances, just before breaking, a Na wire undergoes a very weak Peierls dimerization. This behavior of a Na wire is understood in terms of its electron-phonon coupling properties.

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