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Vibrational Properties of the π-Bonded Chain Model of the Si(111)2×l Surface

Published online by Cambridge University Press:  25 February 2011

O. L. Alerhand ,
D. C. Allan  and
E. J. Mele
O. L. Alerhand
Affiliation:
Department of Physics, University of Pennsylvania, Philadelphia, PA 19104
D. C. Allan
Affiliation:
Department of Physics, University of Pennsylvania, Philadelphia, PA 19104
E. J. Mele
Affiliation:
Department of Physics, University of Pennsylvania, Philadelphia, PA 19104
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Abstract

A tight-binding theory is used to study vibrational excitations of the π-bonded chain model of the Si(111)2×l surface. Some aspects of the surface phonon spectrum are discussed. We study the charge fluctuations driven by the vibrational excitations and the surface conductivity associated with the phonons. We find that a longitudinal optical phonon on the surface chains dominates the surface conductivity.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 63: Symposium R – Computer-Based Microscopic Description of the Structure and Properties of Materials , 1985 , 37
Copyright
Copyright © Materials Research Society 1986

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References

REFERENCES

1. Ibach, H., Phys. Rev. Lett. 27, 253 (1971).Google Scholar
2. Mele, E.J., Allan, D.C., Alerhand, O.L., and DiVincenzo, D.P., J. Vac. Si. Tech. B 3, 1068 (1985).CrossRefGoogle Scholar
3. Allan, D.C. and Mele, E.J., Phys. Rev. Lett. 53, 826 (1984) and Phys. Rev. B31, 5565 (1985).Google Scholar
4. Chadi, D.J., Phys. Rev. B 29, 85 (1984) and references therein.Google Scholar
5. The calculations reported here were done for a 14-layer slab.Google Scholar
6. Alerhand, O.L., Allan, D.C. and Mele, E.J., Phys. Rev. Lett. 55, xxx (1985).Google Scholar
7. G.J. Lapeyre (private communication).Google Scholar
8. Evans, E. and Mills, D.L., Phys. Rev. B 5, 4126 (1972).Google Scholar
9. Chiradia, P., Cricenty, A., Selci, S., Chiarotti, G., Phys. Rev. Lett. 52, 1145 (1984); M.A. Olmstead and N.M. Amer, Phys. Rev. Lett. 52, 1148 (1984).Google Scholar
10. DiNardo, N.J., Thompson, W.A., Schell-Sorocin, H.A. and Demuth, J.E. (to be published).Google Scholar