تقرير
Thermal spin current and spin accumulation at ferromagnetic insulator/nonmagnetic metal interface
| العنوان: | Thermal spin current and spin accumulation at ferromagnetic insulator/nonmagnetic metal interface |
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| المؤلفون: | Shen, Y. H., Wang, X. S., Wang, X. R. |
| المصدر: | Phys. Rev. B 94, 014403 (2016) |
| سنة النشر: | 2016 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | Spin current injection and spin accumulation near a ferromagnetic insulator (FI)/nonmagnetic metal (NM) bilayer film under a thermal gradient is investigated theoretically. Using the Fermi golden rule and the Boltzmann equations, we find that FI and NM can exchange spins via interfacial electron-magnon scattering because of the imbalance between magnon emission and absorption caused by either non-equilibrium distribution of magnons or non-equilibrium between magnons and electrons. A temperature gradient in FI and/or a temperature difference across the FI/NM interface generates a spin current which carries angular momenta parallel to the magnetization of FI from the hotter side to the colder one. Interestingly, the spin current induced by a temperature gradient in NM is negligibly small due to the nonmagnetic nature of the non-equilibrium electron distributions. The results agree well with all existing experiments. Comment: 8 pages, 2 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.94.014403 |
| الوصول الحر: | http://arxiv.org/abs/1603.00942Test |
| رقم الانضمام: | edsarx.1603.00942 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.94.014403 |
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