Applied Physics A

, Volume 55, Issue 3, pp 231–234 | Cite as

Magnetoconductivity of thin epitaxial silver films

  • R. Schad
  • S. Heun
  • T. Heidenblut
  • M. Henzler
Solids And Materials
Received:
Accepted:

Abstract

The magnetoconductance (MC) of thin epitaxial Ag films on Si(111) surfaces is studied as a function of film thickness (1–125 monolayers (ML)) at 20 K under ultra high vacuum (UHV) conditions. Three different regimes of magnetoconductance are observed depending on the degree of disorder in the films which is controlled by film thickness and annealing procedures. Thick films (d>3 ML) with diffuse electron transport show in the case of large elastic scattering times τ0 a classical, negative MC ∞ B2 and in the case of small τ0 a positive MC due to weak localization effects. The MC of thin films (d<2 ML) which have a conductance smaller than e2/h, i.e. localized electron states, is negative again.

PACS

73.50.Jt 73.20.Nz 73.60.Aq 
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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • R. Schad
    • 1
  • S. Heun
    • 1
  • T. Heidenblut
    • 1
  • M. Henzler
    • 1
  1. 1.Institut für FestkörperphysikUniversität HannoverHannover 1Fed. Rep. Germany

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