Observasion of Metal-Vacuum-Metal Tunnneling, Field Emission and tIhe Transition Region.
Russell Young, John Ward, and Fred Scire.
Phys. Rev. Lett. V. 27, N 14, P. 922-924.
National Bureau of Standards, Washington, D, C. 20234 (Received 26 August 1971)

We report what we believe are the first observations of metal-vacuum-metal tunneling. A field emitter is brought close to a metal surface and the current-voltage characterlstic is measured in three regions: the Fowler-Nordheim region, the intermediate region, and the metal-vacuum-metal region.