Correlated induced electron and spin 'gratings' in nanostructured CdSe/CdS
The possibility and the conditions of the formation of correlated “gratings” of electrons and their spins in a semiconductor film containing CdSe/CdS nanoparticles (which are the quantum dots) have been studied. Notably, the induction of electron spin “gratings” on quantum dots has been considered f...
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Kazan Federal University
2018-03-01
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| Series: | Учёные записки Казанского университета: Серия Физико-математические науки |
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| Online Access: | https://kpfu.ru/correlated-induced-electron-and-spin-39gratings39_342730.html |
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| author | V.V. Samartsev |
| author_facet | V.V. Samartsev |
| author_sort | V.V. Samartsev |
| collection | DOAJ |
| description | The possibility and the conditions of the formation of correlated “gratings” of electrons and their spins in a semiconductor film containing CdSe/CdS nanoparticles (which are the quantum dots) have been studied. Notably, the induction of electron spin “gratings” on quantum dots has been considered for the first time. We have suggested to perform an excitation of the film in the two photon absorption mode using two crossed (at an angle of 60?) femtosecond laser beams. As a result of the excitation, two nonequilibrium “gratings” are induced simultaneously in the excitation area of the film. If the exciting pulses have the same polarizations, then induced “gratings” of electrons are formed. However, in the case when the exciting pulses have mutually orthogonal polarizations, the formation of induced “gratings” of electron spins takes place. The same exciting pulses excite the electrons of CdSe/CdS nanoparticles into a superposition state. Then the free induction decay signal is generated. This signal being diffracted by induced “gratings” plays the role of a probe pulse in the suggested experimental scheme. The diffracted signals propagating in two mutually opposite directions are correlated (i.e., they are identical). Their wavefronts can carry the correlated transient holograms. Other possible applications of correlated “gratings” (in spintronics and in coherent femtosecond laser spectroscopy) are also discussed. |
| format | Article |
| id | doaj-art-74a87d69e48a45df81de2b8c20b8d8bf |
| institution | Kabale University |
| issn | 2541-7746 2500-2198 |
| language | English |
| publishDate | 2018-03-01 |
| publisher | Kazan Federal University |
| record_format | Article |
| series | Учёные записки Казанского университета: Серия Физико-математические науки |
| spelling | doaj-art-74a87d69e48a45df81de2b8c20b8d8bf2024-12-02T08:34:31ZengKazan Federal UniversityУчёные записки Казанского университета: Серия Физико-математические науки2541-77462500-21982018-03-011601116125Correlated induced electron and spin 'gratings' in nanostructured CdSe/CdSV.V. Samartsev0Zavoisky Physical-Technical Institute, Kazan Scientific Center, Russian Academy of Sciences, Kazan, 420029 RussiaThe possibility and the conditions of the formation of correlated “gratings” of electrons and their spins in a semiconductor film containing CdSe/CdS nanoparticles (which are the quantum dots) have been studied. Notably, the induction of electron spin “gratings” on quantum dots has been considered for the first time. We have suggested to perform an excitation of the film in the two photon absorption mode using two crossed (at an angle of 60?) femtosecond laser beams. As a result of the excitation, two nonequilibrium “gratings” are induced simultaneously in the excitation area of the film. If the exciting pulses have the same polarizations, then induced “gratings” of electrons are formed. However, in the case when the exciting pulses have mutually orthogonal polarizations, the formation of induced “gratings” of electron spins takes place. The same exciting pulses excite the electrons of CdSe/CdS nanoparticles into a superposition state. Then the free induction decay signal is generated. This signal being diffracted by induced “gratings” plays the role of a probe pulse in the suggested experimental scheme. The diffracted signals propagating in two mutually opposite directions are correlated (i.e., they are identical). Their wavefronts can carry the correlated transient holograms. Other possible applications of correlated “gratings” (in spintronics and in coherent femtosecond laser spectroscopy) are also discussed.https://kpfu.ru/correlated-induced-electron-and-spin-39gratings39_342730.htmlcorrelated signalsquantum dotsinduced electron and spin “gratings”polarizationcoincidence schemenonreversible relaxation timecoherent spectroscopyspintronics |
| spellingShingle | V.V. Samartsev Correlated induced electron and spin 'gratings' in nanostructured CdSe/CdS Учёные записки Казанского университета: Серия Физико-математические науки correlated signals quantum dots induced electron and spin “gratings” polarization coincidence scheme nonreversible relaxation time coherent spectroscopy spintronics |
| title | Correlated induced electron and spin 'gratings' in nanostructured CdSe/CdS |
| title_full | Correlated induced electron and spin 'gratings' in nanostructured CdSe/CdS |
| title_fullStr | Correlated induced electron and spin 'gratings' in nanostructured CdSe/CdS |
| title_full_unstemmed | Correlated induced electron and spin 'gratings' in nanostructured CdSe/CdS |
| title_short | Correlated induced electron and spin 'gratings' in nanostructured CdSe/CdS |
| title_sort | correlated induced electron and spin gratings in nanostructured cdse cds |
| topic | correlated signals quantum dots induced electron and spin “gratings” polarization coincidence scheme nonreversible relaxation time coherent spectroscopy spintronics |
| url | https://kpfu.ru/correlated-induced-electron-and-spin-39gratings39_342730.html |
| work_keys_str_mv | AT vvsamartsev correlatedinducedelectronandspingratingsinnanostructuredcdsecds |