Summary
We present EELS cross-section data of surface phonons on Ag(001) along\(\bar \Gamma - \bar {\rm M}\). The inelastic intensity is due to the contribution of different modes which are not solved by the EEL spectrometer. However, the shape of the inelastic intensity shows a strong dependence on impact energy for all wave vectors, which allows tuning the EELS on the different modes. The dependence of the loss frequency on impact energy is at variance with the one reported previously for\(\bar {\rm M}\), leading to the conclusion that other modes contribute to the inelastic intensity besidesS 1 andL 1 which dominate at\(\bar {\rm M}\).
Similar content being viewed by others
References
A. A. Maradudin, R. F. Wallis andS. Y. Tong:Surface phonons and polaritons, inLandolt Börnstein: The Physics of Solid Surfaces, edited byG. Chiarotti (Springer-Verlag, 1992), Chapt. 3.1.
M. Rocca, S. Lehwald, H. Ibach andT. S. Rahman: inStructure and Dynamics of Surface I, edited byW. Schommers andP. Von Blankenhagen:Topics in Current Physics,41 (Springer-Verlag, 1986), p. 245.
H. Ibach, M. Ballden, D. Bruchmann andS. Lehwald:Surf. Sci.,269–270, 94 (1992).
Y. Chen, S. Y. Tong, J. S. Kim, L. L. Kesmodel, T. Rodach, K. P. Bohnen andK. M. Ho:Phys. Rev. B,44, 11394 (1991).
Y. Chen, S. Y. Tong, M. Rocca, P. Moretto, U. Valbusa, K. P. Bohnen andK. M. Ho:Surf. Sci. Lett.,250, L389 (1991).
P. Moretto, M. Rocca, U. Valbusa andJ. Black:Phys. Rev. B,41, 12905 (1990).
M. Wuttig, R. Franchy andH. Ibach:Z. Phys. B,65, 71 (1986).
M. Rocca, L. Risso, B. Vicenzi andU. Valbusa:Surf. Sci.,216, 259 (1989).
M. Rocca, U. Valbusa, A. Gussoni, G. Maloberti andL. Racca:Rev. Sci. Instrum.,72, 2172 (1991).
M. Rocca, S. Lehwald, H. Ibach andT. S. Rahman:Surf. Sci.,171, 632 (1976).
M. L. Xu, B. M. Hall, S. Y. Tong, M. Rocca, H. Ibach, S. Lehwald andJ. Black:Phys. Rev. Lett.,54, 1171 (1985);M. Rocca, H. Ibach, S. Lehwald, M. L. Xu, B. M. Hall andS. Y. Tong: inThe Structure of Surfaces, edited byM. A. Van Hove andS. Y. Tong:Springer Series in Surf. Sci.,2 (Springer, 1985), p. 156.
Author information
Authors and Affiliations
Additional information
In honour of Prof. Fausto Fumi on the occasion of his retirement from teaching.
Rights and permissions
About this article
Cite this article
Rocca, M., Valbusa, U. EELS cross-section of surface phonons on Ag(001). Il Nuovo Cimento D 15, 493–499 (1993). https://doi.org/10.1007/BF02456932
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02456932