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February 15, 1971Physical Review Letters53 citations

New Value for Work Function of Sodium and the Observation of Surface- Plasmon Effects

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RWR. J. WhitefieldJBJames J. Brady

Key Points

  • To determine the work function of clean sodium films and its changes due to surface contamination.
  • Vacuum-deposition of sodium films to achieve cleanliness.
  • Measurement of the work function and surface-plasmon frequency.
  • Assessment of sulfur effects on surface characteristics.
  • The work function of vacuum-deposited sodium films was found to be 2.75 eV.
  • Surface-plasmon frequency shifts were linked to sulfur contamination effects.
  • Lack of surface contamination was shown to stabilize the work function measurements.

Abstract

Clean vacuum-deposited films of sodium were found to exhibit a work function of approximately 2.75 eV. Modification of the surface-plasmon frequency due to sulfur surface contamination was observed. The new value of the work function was shown to be due to a lack of surface contamination.

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Cite This Study

Whitefield et al. (1971) studied this question.

synapsesocial.com/papers/6a1944f1c05413006f581b10https://doi.org/10.1103/physrevlett.26.380
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