Renormalization of the electron spectrum by confined and interface phonons in a spherical nanoheterosystem (β-HgS/CdS)
| Autor: | R. B. Fartushinskii, M. Ya. Mikhal’ova, N. V. Tkach, O. M. Voitsekhivskaya, V. A. Golovatskii |
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| Rok vydání: | 2001 |
| Předmět: |
Physics
Condensed matter physics Solid-state physics Phonon Spectrum (functional analysis) Electron Single level Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Electronic Optical and Magnetic Materials Renormalization Condensed Matter::Materials Science Quantum dot Bound state Condensed Matter::Strongly Correlated Electrons |
| Zdroj: | Physics of the Solid State. 43:1370-1376 |
| ISSN: | 1090-6460 1063-7834 |
| DOI: | 10.1134/1.1386481 |
| Popis: | The mechanisms of the electron spectrum renormalization by confined (L) and interface (I) phonons in a spherical quantum dot (QD) embedded in a semiconducting sphere are studied for the specific case of the β-HgS/CdS nanosystem. It is shown that, in view of the absence of interaction between an electron in spherically symmetric states and interface phonons forming only one bound state in a small-size QD, the shift Δ of this single level is formed only by confined phonons. As the size of the QD increases, the contribution of L and I phonons to Δ changes accordingly (L phonons slightly dominate), and the shift varies from Δ CdS 3 to Δ HgS 3 . |
| Databáze: | OpenAIRE |
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