Quantum resonances of Landau damping in the electromagnetic response of metallic nanoslabs
| Autor: | S. G. Castillo-López, Felipe Pérez-Rodríguez, N. M. Makarov |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Condensed matter physics business.industry Semiclassical physics 02 engineering and technology Electron 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Magnetic field symbols.namesake Quantization (physics) Optics 0103 physical sciences Boltzmann constant symbols Wavenumber Landau damping 010306 general physics 0210 nano-technology business Quantum |
| Zdroj: | Optics Letters. 43:2410 |
| ISSN: | 1539-4794 0146-9592 |
| Popis: | The resonant quantization of Landau damping in far-infrared absorption spectra of metal nano-thin films is predicted within the Kubo formalism. Specifically, it is found that the discretization of the electromagnetic and electron wave numbers inside a metal nanoslab produces quantum nonlocal resonances well-resolved at slab thicknesses smaller than the electromagnetic skin depth. Landau damping manifests itself precisely as such resonances, tracing the spectral curve obtained within the semiclassical Boltzmann approach. For slab thicknesses much greater than the skin depth, the classical regime emerges. Here the results of the quantum model and the Boltzmann approach coincide. Our analytical study is in perfect agreement with corresponding numerical simulations. |
| Databáze: | OpenAIRE |
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