Elastic light scattering by semiconductor quantum dots of arbitrary shape

Autor:	S. T. Pavlov, L. I. Korovin, I. G. Lang
Rok vydání:	2007
Předmět:	Wavelength Materials science Quantum dot Exchange interaction Radiative transfer Electron Atomic physics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Polarization (waves) Quantum Light scattering Electronic Optical and Magnetic Materials
Zdroj:	Physics of the Solid State. 49:1368-1374
ISSN:	1090-6460 1063-7834
Popis:	Elastic light scattering by low-dimensional quantum objects without a change in the frequency is theoretically investigated in terms of the quantum perturbation theory. The differential cross section of resonance light scattering from any excitons in any quantum dots is calculated. It is demonstrated that, when the light wavelengths considerably exceed the quantum-dot size, the polarization and angular distribution of the scattered light do not depend on the shape, the size, or the configuration of quantum dots. In this case, the total light scattering cross section is independent of the quantum-dot size. If the radiative damping of an exciton exceeds the nonradiative damping, the total light scattering cross section at resonance is of the order of the light wavelength squared. The radiative damping associated with the long-range exchange interaction between electrons and holes is calculated for any excitons and any quantum dots.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7c1751ee258dc9fecd9ff544b6e771f6 https://doi.org/10.1134/s1063783407070293 Zobrazit plný text záznamu Full text from SpringerLink