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- Title
Rotational Dipole Plasmon Mode in Semiconductor Nanoparticles.
- Authors
Gerchikov, L. G.; Ipatov, A. N.
- Abstract
We analyze a new type of the plasmon mode in nanosize semiconductor crystals. Rotational dipole plasmon resonance, in which only angular degrees of freedom are excited, prevails in the optical spectra of photodoped nanocrystals. Such a collective mode differs basically from surface plasmon resonances in typical photoabsorption spectra of metallic nanoclusters and can be described as an excited state in a finite Fermi system as well as a rotational motion of a quantum liquid. We demonstrate that such dipole oscillations are harmonic, which makes it possible to identify them as a plasmon resonant excitation.
- Subjects
SEMICONDUCTOR nanoparticles; ROTATIONAL motion; DEGREES of freedom; SURFACE plasmon resonance; QUANTUM liquids
- Publication
Journal of Experimental & Theoretical Physics, 2021, Vol 132, Issue 6, p922
- ISSN
1063-7761
- Publication type
Article
- DOI
10.1134/S1063776121050022