Emission of energetic electrons from tunnel junctions

Jeff Drucker, P. K. Hansma

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Energetic (hot) electrons can be emitted from Al-Al2O3-Au tunnel junctions. This emission supports a recently proposed hot-electron picture for light emission from tunnel junctions. A transfer ratio curve shows that a fraction approaching 1% of the injected, hot tunneling electrons retain sufficient normal energy to surmount the Au-vacuum surface barrier and be collected if the Au work function is lowered by the evaporation of 3-4 monolayers of cesium. Fitting tunneling junction I-V curves by two different methods gives a tunneling barrier 2-4 eV high and 15-19 thick. These barrier parameters are comparable to those of light-emitting tunnel junctions.

Original languageEnglish (US)
Pages (from-to)4348-4350
Number of pages3
JournalPhysical Review B
Issue number8
StatePublished - 1984
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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