Advertisement

Theoretical Models for Adsorption and Diffusion of In on Cu(100)

  • M. S. S. Challa
  • Yi Li
  • M. R. Press
  • S. N. Khanna
  • P. Jena
  • M. Yousouff
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 45)

Abstract

Using ab-initio molecular cluster calculations we show that In adsorbed on Cu(100) surface occupies a position above the bridge sites of the Cu plane and that the electric field gradient felt by the In atoms is appreciable only at Cu vacancies. To explain data from PAC experiments we propose that the radioactive In probes diffuse to the Cu plane during the decontamination process. Monte Carlo simulations of the In cluster kinetics show this model to be feasible and also that the free In monomer hopping rate is about 30 times greater than previous estimates.

Keywords

Electric Field Gradient Angular Correlation Bridge Site Numerical Integration Scheme Perform Monte Carlo Simulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    W. Körner, W. Keppner, B. Lehndorff-Junges and G. Schatz, Phys. Rev. Lett., 49, 1735 (1982).CrossRefADSGoogle Scholar
  2. 2.
    T.Klas, J. Voigt, W. Keppner, R. Wesche and G. Schatz, Phys. Rev. Lett., 57, 1068 (1986).CrossRefADSGoogle Scholar
  3. 3.
    T. Klas, J. Voigt, R. Platzer, R. Wesche and G. Schatz, Hyper. Inter., 34, 577 (1987).CrossRefADSGoogle Scholar
  4. 4.
    B. Lindgren, Hyper. Int., 34, 217 (1987).CrossRefADSGoogle Scholar
  5. 5.
    R. Blender, W. Dietrich, H. L. Frisch and M. Yussouff, Z. Phys. B, 71, 103 (1988).CrossRefADSGoogle Scholar
  6. 6.
    Yi Li, M. R. Press, S. N. Khanna, P. Jena and M. Yussouff, submitted to Phys. Rev. B.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • M. S. S. Challa
    • 1
  • Yi Li
    • 1
  • M. R. Press
    • 1
  • S. N. Khanna
    • 1
  • P. Jena
    • 1
  • M. Yousouff
    • 2
    • 3
  1. 1.Department of PhysicsVirginia Commonwealth UniversityRichmondUSA
  2. 2.Fakultät für PhysikUniversität KonstanzKonstanzFed. Rep. of Germany
  3. 3.Department of PhysicsIndian Institute of TechnologyKanpurIndia

Personalised recommendations