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Физика и техника полупроводников, 2020, том 54, выпуск 11, страница 1258
(Mi phts6674)
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NANOSTRUCTURES : PHYSICS AND TECHNOLOGY 28th International Symposium (Minsk, Republic of Belarus, September, 2020)
Excitons in Nanostructures
Modeling of exciton exchange interaction in GaAs/AlGaAs quantum wells
E. S. Khramtsov, B. F. Gribakin, A. V. Trifonov, I. V. Ignatiev Spin Optics Laboratory, St. Petersburg State University, 198504 St. Petersburg, Petrodvorets, Russia
Аннотация:
In this work, we study the exchange interactions between two excitons in the GaAs/AlGaAs quantum wells of various widths. We numerically solved the Schrödinger equation for an exciton in a quantum well to find the two-exciton wave functions and to calculate the exchange integral. The results suggest that the strongest interactions between excitons occur in the quantum wells of widths of about 40–50 nm, with the exchange energy being of about of 9 $\mu$eV for an exciton density of 1/$\mu$m$^2$.
Ключевые слова:
quantum wells, exciton, exchange interaction.
Поступила в редакцию: 23.06.2020 Исправленный вариант: 23.07.2020 Принята в печать: 27.07.2020
Образец цитирования:
E. S. Khramtsov, B. F. Gribakin, A. V. Trifonov, I. V. Ignatiev, “Modeling of exciton exchange interaction in GaAs/AlGaAs quantum wells”, Физика и техника полупроводников, 54:11 (2020), 1258; Semiconductors, 54:11 (2020), 1503–1505
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/phts6674 https://www.mathnet.ru/rus/phts/v54/i11/p1258
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