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)


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.


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