Applied Physics A

, Volume 40, Issue 2, pp 79–84 | Cite as

Field-emission flicker noise from potassium adsorbed on W(111) bounded and unbounded surface diffusion by spectral analysis

  • J. Bceben
  • Ch. Kleint
  • R. Mceclewski
Contributed Papers

Abstract

The spectral density functionsW(f) of the field-emission flicker noise of potassium adsorbed on the tungsten (111) region were determined. The analysis in terms of the Gesley-Swanson or the Timm and Van der Ziel model gives surface diffusion energies between 0.54 and 0.31 eV for (average) coverages from 0.15 to 0.38 and diffusion prefactors between 3×10−1 and 10−4 cm2/s. The fitting procedures are successful for both bounded and unbounded diffusion though in opposite order of temperature, as expected.

PACS

05.40−j 82.65.−i 68.90.+g 73.90.+f 

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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • J. Bceben
    • 1
  • Ch. Kleint
    • 1
  • R. Mceclewski
    • 2
  1. 1.Sektion PhysikKarl-Marx-UniversitätLeipzigGerman Democratic Republic
  2. 2.Instytut Fizyki DoświadczalnejUniwersytet WrocławskiWrocławPoland

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