Abstract
We have calculated the inelastic cross section of the Ni(001) surface phonons S4 and S6 for an extended energy range of 50–250 eV. The calculated results indicate regions of energy where the S6 mode has a cross section comparable to that of S4. The theoretical results are confirmed by measurements which observed the S6 mode at the predicted energies. The simultaneous measurement of S4 and S5 modes allows a discrimination between different structural models for the Ni(001) surface. From the S4/S6 intensity ratio, we determined a 1.7-3.3% contraction in the surface interlayer spacing of Ni(001).
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References
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M. Rocca, S. Lehwald, H. Ibach, T.S. Rahman: To be published
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© 1985 Springer-Verlag Berlin Heidelberg
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Rocca, M., Ibach, H., Lehwald, S., Xu, ML., Hall, B.M., Tong, S.Y. (1985). Electron-Phonon Scattering and Structure Analysis. In: Van Hove, M.A., Tong, S.Y. (eds) The Structure of Surfaces. Springer Series in Surface Sciences, vol 2. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82493-7_26
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DOI: https://doi.org/10.1007/978-3-642-82493-7_26
Publisher Name: Springer, Berlin, Heidelberg
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