Plasmon excitations in scanning tunneling microscopy

Simultaneous imaging of modes with different localizations coupled at the tip

Manuel J. Romero, Jao Van De Lagemaat, Gary Rumbles, Mowafak M. Al-Jassim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The authors investigate the localization of photons emitted at the tip during scanning tunneling microscopy measurements on atomically flat gold substrates. Emission patterns of the plasmon-mediated luminescence exhibit distinct features that are assigned to the localized modes of the surface plasmon (LSP) confined to the tunneling gap and propagating modes (PSP) coupled to the LSP by the optical cavity beneath the tip. Tunneling luminescence spectroscopy reveals that the plasmon localization at the tip increases when modes of higher energy are excited. Acquisition of local emission patterns allows us for the simultaneous imaging of LSP and PSP modes.

Original languageEnglish
Article number193109
JournalApplied Physics Letters
Volume90
Issue number19
DOIs
Publication statusPublished - 2007

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scanning tunneling microscopy
pressure sensitive paints
excitation
luminescence
acquisition
gold
cavities
photons
spectroscopy
energy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Plasmon excitations in scanning tunneling microscopy : Simultaneous imaging of modes with different localizations coupled at the tip. / Romero, Manuel J.; Van De Lagemaat, Jao; Rumbles, Gary; Al-Jassim, Mowafak M.

In: Applied Physics Letters, Vol. 90, No. 19, 193109, 2007.

Research output: Contribution to journalArticle

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