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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

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