期刊
PHYSICAL REVIEW LETTERS
卷 116, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.116.036802
关键词
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资金
- GENCIIDRIS [2015097459]
- Agence National de la Recherche [ANR-14-CE26-0016-01]
- Labex NIE [ANR-11-LABX-0058_NIE]
- Region Alsace and the International Center for Frontier Research in Chemistry (FRC)
- Agence Nationale de la Recherche (ANR) [ANR-14-CE26-0016] Funding Source: Agence Nationale de la Recherche (ANR)
A molecular wire containing an emitting molecular center is controllably suspended between the plasmonic electrodes of a cryogenic scanning tunneling microscope. Passing current through this circuit generates an ultranarrow-line emission at an energy of approximate to 1.5 eV which is assigned to the fluorescence of the molecular center. Control over the linewidth is obtained by progressively detaching the emitting unit from the surface. The recorded spectra also reveal several vibronic peaks of low intensities that can be viewed as a fingerprint of the emitter. Surface plasmons localized at the tip-sample interface are shown to play a major role in both excitation and emission of the molecular excitons.
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