تقرير
Nonmonotonic bias dependence of local spin accumulation signals in ferromagnet/semiconductor lateral spin-valve devices
| العنوان: | Nonmonotonic bias dependence of local spin accumulation signals in ferromagnet/semiconductor lateral spin-valve devices |
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| المؤلفون: | Fujita, Y., Yamada, M., Tsukahara, M., Naito, T., Yamada, S., Oki, S., Sawano, K., Hamaya, K. |
| المصدر: | Phys. Rev. B 100, 024431 (2019) |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| الوصف: | We find extraordinary behavior of the local two-terminal spin accumulation signals in ferromagnet (FM)/semiconductor (SC) lateral spin-valve devices. With respect to the bias voltage applied between two FM/SC Schottky tunnel contacts, the local spin-accumulation signal can show nonmonotonic variations, including a sign inversion. A part of the nonmonotonic features can be understood qualitatively by considering the rapid reduction in the spin polarization of the FM/SC interfaces with increasing bias voltage. In addition to the sign inversion of the FM/SC interface spin polarization, the influence of the spin-drift effect in the SC layer and the nonlinear electrical spin conversion at a biased FM/SC contact are discussed. Comment: 10 pages, 7 figures, supplementary material |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.100.024431 |
| URL الوصول: | http://arxiv.org/abs/1803.08187 |
| رقم الأكسشن: | edsarx.1803.08187 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.100.024431 |
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