Vacuum Spin LED: First Step towards Vacuum Semiconductor Spintronics Научная публикация
Журнал |
Nanomaterials
, E-ISSN: 2079-4991 |
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Вых. Данные | Год: 2023, Том: 13, Номер: 3, Номер статьи : 422, Страниц : 12 DOI: 10.3390/nano13030422 | ||||||
Ключевые слова | electrons; spin; spintronics; quantum wells; spin LED; optical orientation; negative electron affinity | ||||||
Авторы |
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Организации |
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Реферат:
Improving the efficiency of spin generation, injection, and detection remains a key challenge for semiconductor spintronics. Electrical injection and optical orientation are two methods of creating spin polarization in semiconductors, which traditionally require specially tailored p-n junctions, tunnel or Schottky barriers. Alternatively, we introduce here a novel concept for spin-polarized electron emission/injection combining the optocoupler principle based on vacuum spin-polarized light-emitting diode (spin VLED) making it possible to measure the free electron beam polarization injected into the III-V heterostructure with quantum wells (QWs) based on the detection of polarized cathodoluminescence (CL). To study the spin-dependent emission/injection, we developed spin VLEDs, which consist of a compact proximity-focused vacuum tube with a spin-polarized electron source (p-GaAs(Cs,O) or Na2KSb) and the spin detector (III-V heterostructure), both activated to a negative electron affinity (NEA) state. The coupling between the photon helicity and the spin angular momentum of the electrons in the photoemission and injection/detection processes is realized without using either magnetic material or a magnetic field. Spin-current detection efficiency in spin VLED is found to be 27% at room temperature. The created vacuum spin LED paves the way for optical generation and spin manipulation in the developing vacuum semiconductor spintronics.
Библиографическая ссылка:
Tereshchenko O.E.
, Golyashov V.A.
, Rusetsky V.S.
, Kustov D.A.
, Mironov A.V.
, Demin A.Y.
Vacuum Spin LED: First Step towards Vacuum Semiconductor Spintronics
Nanomaterials. 2023. V.13. N3. 422 :1-12. DOI: 10.3390/nano13030422
Vacuum Spin LED: First Step towards Vacuum Semiconductor Spintronics
Nanomaterials. 2023. V.13. N3. 422 :1-12. DOI: 10.3390/nano13030422
Даты:
Поступила в редакцию: | 6 янв. 2023 г. |
Принята к публикации: | 14 янв. 2023 г. |
Опубликована online: | 19 янв. 2023 г. |
Опубликована в печати: | 1 февр. 2023 г. |
Идентификаторы БД:
Chemical Abstracts | 2023:341297 |
Chemical Abstracts (print) | 182:69121 |
PMID (PubMed) | 36770383 |
OpenAlex | W4317622037 |
Цитирование в БД:
БД | Цитирований |
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OpenAlex | 3 |