The theory of exciton-two-phonon resonant Raman scattering of light in a quantum well has been developed. This article shows that in the case of exciton-two-phonon Raman scattering of light, in which two-dimensional excitons appear as intermediate states, it leads to a sharp increase in scattering compared to the mechanism of electron-hole pairs. The amplification is due to the fact that in a quantum well, in which the energies of the electron and hole are dimensionally quantized, the process of direct creation (or direct annihilation) of an exciton and the actual emission of a second phonon by the exciton are possible. Scattering tensor at the maximum of the second phonon repetition peak.
| Mualliflar | Эшпулатов, Б. |
|---|---|
| Jurnal | Рақамли технологияларнинг назарий ва амалий масалалари |
| Nashr sanasi | 2023-12-26 |
| Jild | 6 |
| Son | 4 |
| Betlar | 87-91 |
| Til | Rus |
Mathematical model, quantum well, exciton, light scattering, Математическая модель, квантовая яма, экситон, рассеяние света
From the methods of calculating the fractal dimension, the prism method, the cube method, the method of counting cells, instructions on the methods of calculating the fractal dimension using set theory and the block…
The paper reflects the features of investments in the construction sector of Uzbekistan and the main directions for further attracting investments. At the same time, a mathematical and theoretical model has been…
In order to study the impact of the proposed NSA(New stream algorithm) algorithm reflections on the selection of security parameters, research was carried out, in which analysis methods and data presented in the…
Mammography is crucial for early identification and screening of breast cancer. Mammogram images can identify and classify anomalies and explain breast tissue, as well as other useful information. A technique for…
A set of descriptors is used to solve real challenges in image registration, object search in images, and image comparison. The various types of descriptors that are addressed in this article include those that are…
Methodological foundations have been developed for solving problems of optimizing search, storage, and processing of information according to the criteria of reliability, labor intensity and cost. Estimates of the time…
In this article are described the models of formation and improvement of the media competence of teachers of educational institutions, the requirements placed on them and the emerging problems. The mentioned TPACK…
The COVID-19 epidemic spread to all corners of the world, resulting in numerous infections and deaths. This research proposes a symmetric additional two-dimensional classification framework based on three main modules…
This article discusses the problem of researching methods for processing histological images and conducting computational experiments based on them. Among the existing processing methods, methods of background removal…
This article describe the influence of fog on visualization systems, in particular, on the correct operation of the image processing algorithm. As part of this work, a filter is implemented to eliminate distortions…
Рақамли технологияларнинг назарий ва амалий масалалари — barcha maqolalar