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Published January 15, 1962 | public
Journal Article Open

Transport of hot electrons in thin gold films

Mead, C. A. ORCID icon


Considerable interest has been expressed of late concerning the transparency of thin metal films to electrons with energies of a few electron volts above the Fermi level.(1-4) In the present experiments, information concerning the mean free path for loss of energy in gold is determined directly from measurements of electron transport. The technique used is that of tunnel emission(3,4) in which electrons are caused to tunnel from a metal substrate through a thin insulating layer into a thin metal electrode through which a certain number pass into a vacuum where they are collected. Measurement of the relative number transmitted through the thin metal layer as a function of the thickness of the layer yields a direct measurement of the energy mean free path.

Additional Information

©1962 The American Physical Society. Received 11 December 1961. The author wishes to express his gratitude to H.M. Simpson who constructed a large fraction of the equipment used in these experiments and fabricated many of the experimental structures.


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