Luminescence from metallic quantum wells in a scanning tunnelling microscope

G. Hoffmann, J. Kliewer, R. Berndt

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Luminescence from metallic quantum well system Na on Cu(111) was studied. The tunneling current of a scanning tunneling microscope caused the light emission. Optical spectra and tunneling spectroscopy observations revealed that one component of emission was due to interband transitions between quantum well states of Na layer. The other emission was found to be similar to plasmon mediated emission.

Original languageEnglish (US)
Article number176803
Pages (from-to)1768031-1768034
Number of pages4
JournalPhysical Review Letters
Issue number17
StatePublished - Oct 22 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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