Optical vibration modes in spherical multilayer nanostructures
| Autor: | Z.P. Wang, Y. Xing, X.X. Liang |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Coupling
Materials science Nanostructure Condensed matter physics business.industry Phonon Continuum (design consultancy) Physics::Optics General Chemistry Dielectric Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Condensed Matter::Materials Science Optics Normal mode Dispersion relation Materials Chemistry Electric potential business |
| Zdroj: | Solid State Communications. 162:13-17 |
| ISSN: | 0038-1098 |
| DOI: | 10.1016/j.ssc.2013.03.009 |
| Popis: | Using the dielectric continuum approach, we study the optical vibration modes in a polar spherical multilayer nanostructure hosted in a non-polar material. The dispersion relation and the corresponding electron–phonon interaction Hamiltonians for interface optical (IO) or surface optical (SO) phonons are derived. As a typical case, the numerical results for the CdSe/ZnS/CdSe spherical multilayer nanostructure are given. The frequency and electric potential characteristics of 5 branches of IO/SO phonon modes are analyzed. The results show that the electron–phonon coupling related to the IO modes with higher frequencies and the SO modes are more significant. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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