Apie M. Saakašvilio Ir R. Glucksmanno Laisvę

Lopata, Raimundas

doi:10.15388/polit.2009.2.8414

Cited by 1 publication

(1 citation statement)

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“…[45]. While TDDFT using traditional exchange-correlation functionals such as ALDA fail to describe the important low-lying excited states in acene compounds [44], it appears capable to accurately capture the main nanoscopic effects. These resonances are plasmonlike, since we note a progressive shift towards the left of the spectrum with longer chains accompanied by an increase in oscillator strength.…”

Section: Acenes and Poly(p-phenylene)mentioning

confidence: 99%

Universal nature of collective plasmonic excitations in finite 1D carbon-based nanostructures

Polizzi

Yngvesson²

2015

Nanotechnology

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Tomonaga-Luttinger (T-L) theory predicts collective plasmon resonances in 1-D nanostructure conductors of finite length, that vary roughly in inverse proportion to the length of the structure. In-depth quantitative understanding of such resonances which have not been clearly identified in experiments so far, would be invaluable for future generations of nano-photonic and nano-electronic devices that employ 1-D conductors. Here we provide evidence of the plasmon resonances in a number of representative 1-D finite carbon-based nanostructures using first-principle computational electronic spectroscopy studies. Our special purpose real-space/real-time all-electron Time-Dependent Density-Functional Theory (TDDFT) simulator can perform excited-states calculations to obtain correct frequencies for known optical transitions, and capture various nanoscopic effects including collective plasmon excitations. The presence of 1-D plasmons is universally predicted by the various numerical experiments, which also demonstrate a phenomenon of resonance splitting. For the metallic carbon nanotubes under study, the plasmons are expected to be related to the T-L plasmons of infinitely long 1-D structures.

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Section: Acenes and Poly(p-phenylene)mentioning

confidence: 99%