Terahertz conductivity and coupling between geometrical and plasmonic resonances in nanostructures
| Autor: | T. Ostatnický, Hynek Němec, Jiří Kuchařík |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Condensed matter physics Terahertz radiation Degenerate energy levels Semiclassical physics 02 engineering and technology Conductivity 021001 nanoscience & nanotechnology 01 natural sciences 0103 physical sciences 010306 general physics 0210 nano-technology Fermi gas Quantum Plasmon Doppler broadening |
| Zdroj: | Physical Review B. 99 |
| ISSN: | 2469-9969 2469-9950 |
| Popis: | Terahertz conductivity spectra of charges moving ballistically in one-, two-, and three-dimensional infinitely deep rectangular potential wells were investigated theoretically using semiclassical and quantum Kubo formulas. The conductivity spectrum of a degenerate electron gas in these nanostructures exhibits a series of geometrical resonances. These further couple with plasmon resonances occurring in isolated structures: qualitatively different interaction regimes are found in one-, two-, and three-dimensional nanostructures. In contrast, the response of a nondegenerate electron gas smears into a single broad band due to the excessive spectral broadening caused by the wide distribution of charge velocities. |
| Databáze: | OpenAIRE |
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