Luminescence from metallic quantum wells in a scanning tunneling microscope

Germar Hoffmann, Jörg Kliewer, Richard Berndt

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The tunneling current of a scanning tunneling microscope is reported to cause light emission from the metallic quantum well system Na on Cu(111). Optical spectra along with tunneling spectroscopy show that one component of the emission is due to interband transitions between quantum well states of the Na layer. The other component is similar to plasmon-mediated emission observed previously from noble metals. The emission is a unique local probe of the electronic structure of this quantum well system.

Original languageEnglish (US)
JournalPhysical Review Letters
Issue number17
StatePublished - Oct 8 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


Dive into the research topics of 'Luminescence from metallic quantum wells in a scanning tunneling microscope'. Together they form a unique fingerprint.

Cite this