تقرير
Optically-detected long-lived spin coherence in multilayer systems: Double and triple quantum wells
| العنوان: | Optically-detected long-lived spin coherence in multilayer systems: Double and triple quantum wells |
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| المؤلفون: | Ullah, S., Gusev, G. M., Bakarov, A. K., Hernandez, F. G. G. |
| المصدر: | National Conference on Mathematical Sciences in Engineering Applications (2018) |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | In this contribution, we investigated the spin coherence of high-mobility dense two-dimensional electron gases confined in multilayer systems. The dynamics of optically-induced spin polarization was experimentally studied employing the time-resolved Kerr rotation and resonant spin amplification techniques. For both the double and triple quantum wells doped beyond the metal-insulator transition, where the spin coherence is greatly suppressed, we found remarkably long spin lifetimes limited by the Dyakonov-Perel mechanism and spin hopping process between the donor sites as well as the spread of ensemble g-factor. The double quantum well structure yields a spin lifetime of 6.25 ns at T = 5 K while the triple quantum well shows a spin lifetime exceeding 25 ns at T = 8 K. Comment: 8 pages, 6 figures, conference proceedings |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1806.03092 |
| رقم الأكسشن: | edsarx.1806.03092 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |