Self-Consistent-Screening Calculation of Surface-Phonon Dispersion Curves at the (110) Surface of Aluminum
- 25 January 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 60 (4) , 309-312
- https://doi.org/10.1103/physrevlett.60.309
Abstract
We have calculated the dynamical matrix for an aluminum slab bounded by a pair of (110) surfaces using a self-consistent implementation of pseudopotential perturbation theory. The screening response of the conduction electrons to the field of the ions is obtained within the local-density approximation of density-functional theory. Both relaxed and unrelaxed geometries are treated. We present numerical results for the dispersion curves of surface phonons. Comparison is made with recent theoretical and experimental results.Keywords
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