Infrared emission from tunneling electrons: The end of the rainbow in scanning tunneling microscopy
Data(s) |
08/06/2009
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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://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 |