Measurements of surface phonon frequencies on Al(110) for comparison with recentab initiocalculations
- 15 September 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 36 (8), 4475-4478
- https://doi.org/10.1103/physrevb.36.4475
Abstract
High-resolution He-atom time-of-flight spectroscopy has been used to measure the dispersion curves of surface phonons on Al(110) in the two high-symmetry directions out to the zone boundaries. The experimental frequencies are compared with the results of the recent pseudopotential calculation of surface forces by Ho and Bohnen [Phys. Rev. Lett. 56, 934 (1986)]. The largest difference between experiment and theory is at where the experiment is smaller by 15%.
Keywords
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