PL EN


Preferences help
enabled [disable] Abstract
Number of results
2001 | 99 | 6 | 665-672
Article title

Diffusion of Potassium on the W(112) Plane Preadsorbed by Ni Atoms: Field Emission Current Fluctuations - Autocorrelation Study

Content
Title variants
Languages of publication
EN
Abstracts
EN
Diffusion of potassium adsorbate on the W(112) plane with preadsorbed nickel was investigated by means of the autocorrelation function of field emission current fluctuations. A comparison of the experimental autocorrelation function with that of a theoretical calculation by Gesley and Swanson gives the surface diffusion coefficient of potassium. From its temperature dependence the diffusion activation energy at several Ni pre-coverages for a constant potassium coverage (Θ_K=0.4) is derived. The dependence of the activation energy for potassium surface diffusion on the nickel coverage - first reduction and then an increase with increasing Ni coverage - is observed. This is in agreement with the results obtained from the spectral analysis of the field emission current fluctuations of the same system. The decrease is understood to be a result of the smoothing effect caused by Ni atoms on the W(112) plane.
Keywords
Year
Volume
99
Issue
6
Pages
665-672
Physical description
Dates
published
2001-06
received
2000-12-11
(unknown)
2001-05-14
References
  • 1. A.G. Naumovets, Yu.S. Vedula, Surf. Sci. Rep., 4, 365, 1984
  • 2. R. Gomer, Rep. Prog. Phys., 53, 917, 1990
  • 3. Ch. Kleint, Surf. Sci., 200, 472, 1988
  • 4. R. Błaszczyszyn, Prog. Surf. Sci., 42, 117, 1993
  • 5. Ch. Kleint, Surf. Sci., 25, 394, 1971
  • 6. R. Gomer, Surf. Sci., 38, 373, 1973
  • 7. M.A. Gesley, L.W. Swanson, Phys. Rev. B, 32, 7703, 1985
  • 8. T. Biernat, Solid State Phenom., 12, 61, 1990
  • 9. J. Bęben, Solid State Phenom., 12, 17, 1990
  • 10. T. Biernat, J. Bęben, R. Męclewski, Surf. Sci., 17, 266, 1992
  • 11. Ch. Kleint, R. Błaszczyszyn, J. Phys. Colloq., 50, C8-91, 1989
  • 12. R. Błaszczyszyn, Ch. Kleint, Surf. Sci., 253, 129, 1991
  • 13. J. Bęben, W. Gubernator, Surf. Sci., 304, 59, 1994
  • 14. T. Biernat, A.M. Dąbrowski, Vacuum, 54, 99, 1999
  • 15. M. Błaszczyszyn, R. Błaszczyszyn, A. Ciszewski, Surf. Sci., 304, 325, 1994
  • 16. J. Kołaczkiewicz, E. Bauer, Surf. Sci., 144, 495, 1984
  • 17. R. Błaszczyszyn, Ch. Kleint, Appl. Phys. A, 46, 145, 1988
  • 18. G.W. Timm, A. Van der Ziel, Physica, 32, 1333, 1966
  • 19. K.F. Wojciechowski, Surf. Sci., 80, 253, 1979
  • 20. I.F. Lyuksyutov, A.G. Naumovets, W.L. Pokrovsky, Two-Dimensional Crystals, Nautshnaya Dumka, Kiev 1988 (in Russian)
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv99n604kz
Identifiers
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.