Infrared emission from tunneling electrons: The end of the rainbow in scanning tunneling microscopy


Autoria(s): Boyle, Michael; Mitra, Joy; Dawson, Paul
Data(s)

08/06/2009

Resumo

Electromagnetic radiation originating with localized surface plasmons in the metal-tip/metal-sample nanocavity of a scanning tunneling microscope is demonstrated to extend to a wavelength lambda of at least 1.7 mu m. Progressive spectral extension beyond lambda similar to 1.0 mu m occurs for increasing tip radius above similar to 15 nm, reaching lambda similar to 1.7 mu m for tip radius similar to 100 nm; these observations are corroborated by use of a simple physical model that relates the discrete plasmon mode frequencies to the tip radius. This spectral extension opens up a new regime for scanning tunneling microscope-based optical spectroscopy.

Formato

application/pdf

Identificador

http://pure.qub.ac.uk/portal/en/publications/infrared-emission-from-tunneling-electrons-the-end-of-the-rainbow-in-scanning-tunneling-microscopy(26e87440-fac4-43ce-b67a-2fc23d36c429).html

http://dx.doi.org/10.1063/1.3154563

http://pure.qub.ac.uk/ws/files/751721/P%20Dawson%20REF%201_APL-94-233118%20(2009).pdf

Idioma(s)

eng

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Boyle , M , Mitra , J & Dawson , P 2009 , ' Infrared emission from tunneling electrons: The end of the rainbow in scanning tunneling microscopy ' Applied Physics Letters , vol 94 , no. 23 , 233118 . DOI: 10.1063/1.3154563

Palavras-Chave #/dk/atira/pure/subjectarea/asjc/3100/3101 #Physics and Astronomy (miscellaneous)
Tipo

article