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Transition from the Ordered Solid to the Disordered Liquid State Viewed by Photoemission

  • P. Oelhafen
  • U. Gubler
  • F. Greuter
Part of the NATO Advanced Study Institutes Series book series (NSSB, volume 42)

Abstract

For several metals like Hg, In, Ga and Tℓ , we show that the solid-liquid phase transition can generate large changes in the photoemission properties. The temperature or phase dependence of the yield Y(T), workfunction Φ(T), vector-ratio α(T) and the energy distribution curves (EDC) are of special interest here. Thallium shows an additional solid-solid phase transition and offers the opportunity of studying a transition between two different ordered states. Possible reasons for the observed changes at a phase transition are discussed.

The structure sensitive photoemission parameters, in combination with their established surface sensitivity makes it possible to investigate experimentally phase transitions in the first few atomic layers of a surface.

Keywords

Liquid Metal Excitation Process Electric Field Vector Liquid Phase Transition Surface Phase Transition 
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.

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References

  1. Ament M.A.E.A. and de Vroomen A.R., J.Phys. F 7, 97, 1977ADSCrossRefGoogle Scholar
  2. Baer Y. and Myers H.P., Solid State Commun. 21, 833, 1977ADSCrossRefGoogle Scholar
  3. Berglund C.N. and Spicer W.E., Phys.Rev. 6A,. 1030, 1964CrossRefGoogle Scholar
  4. Brundle C.R., J.Vac.Sci.Technol. 11, 212, 1974ADSCrossRefGoogle Scholar
  5. Busch G. and Güntherodt H.-J., Solid State Phys. 29, 235, 1974CrossRefGoogle Scholar
  6. Choyke W.J., Vosko S.H. and O’Keeffe T.W., Solid State Commun. 9, 361, 1971ADSCrossRefGoogle Scholar
  7. Cotti P., Güntherodt H.-J., Munz P., Oelhafen P and Wullschleger J., Solid State Commun. 12, 635, 1973ADSCrossRefGoogle Scholar
  8. Eastman D.E., Phys. Rev. Letters 26, 1108, 1971ADSCrossRefGoogle Scholar
  9. Enderby J.E., Liquid Metals 1972, edited S.Z. Beer, Dekker New YorkGoogle Scholar
  10. Endriz J.G., Phys.Rev. B7, 3464, 1973ADSGoogle Scholar
  11. Faber T.E., “An Introduction to the Theory of Liquid Metals”, Cambridge University Press 1972Google Scholar
  12. Feuerbacher B. and Willis R.F., J.Phys. C9, 169, 1976ADSGoogle Scholar
  13. Fitting H.J., Glaefeke H and Wild W., Surface Sci. 75, 267, 1978ADSCrossRefGoogle Scholar
  14. Flodström S.A., Hansson G.V., Hagström S.B.M. and Endriz J.G., Surface Sci. 53 ,156, 1975ADSCrossRefGoogle Scholar
  15. Gisler E., Greuter F. and Oelhafen P., Helvetica Phys. Acta 50, 611, 1977Google Scholar
  16. Gubler U., Oelhafen P., Greuter F. and Preiswerk H.P., Helvetica Physica Acta, in pressGoogle Scholar
  17. Hunderi O. and Ryberg R., J.Phys. F 4, 2084, 1974ADSCrossRefGoogle Scholar
  18. Kliewer K.L., Phys.Rev. B15, 3759, 1977ADSGoogle Scholar
  19. Koyama R.Y. and Spicer W.E., Phys.Rev. B4, 4318, 1971ADSGoogle Scholar
  20. Norris C. and Wotherspoon J.T.M., J.Phys. F7, 1599, 1977ADSCrossRefGoogle Scholar
  21. Norris C, Liquid Metals 1976: Inst. Phys. Conf. Ser. No 30,pp.171Google Scholar
  22. Oelhafen P., Ph.D. thesis (ETH Zurich, Nr. 5767), unpublished, 1976Google Scholar
  23. Read M.N. and Jennings P.J., Surface Sci. 74, 54, 1978ADSCrossRefGoogle Scholar
  24. Sass J.K., Surface Sci. 51, 199, 1975ADSCrossRefGoogle Scholar
  25. Schaich W.L. and Ashcroft N.W., Solid State Commun. 8, 1959, 1970ADSCrossRefGoogle Scholar
  26. Soven P., Phys.Rev. 137A, 1706, 1965ADSCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • P. Oelhafen
    • 1
  • U. Gubler
    • 1
  • F. Greuter
    • 2
  1. 1.Institut für PhysikUniversität BaselBaselSwitzerland
  2. 2.Laboratorium für FestkörperphysikETH ZürichZürichSwitzerland

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