تقرير
Control of the Bose-Einstein Condensation of Magnons by the Spin-Hall Effect
| العنوان: | Control of the Bose-Einstein Condensation of Magnons by the Spin-Hall Effect |
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| المؤلفون: | Schneider, Michael, Breitbach, David, Serha, Rostyslav O., Wang, Qi, Serga, Alexander A., Slavin, Andrei N., Tiberkevich, Vasyl S., Heinz, Björn, Lägel, Bert, Brächer, Thomas, Dubs, Carsten, Knauer, Sebastian, Dobrovolskiy, Oleksandr V., Pirro, Philipp, Hillebrands, Burkard, Chumak, Andrii V. |
| المصدر: | Physical Review Letters 127, 237203 (2021) |
| سنة النشر: | 2021 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Physics - Applied Physics, Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Quantum Gases |
| الوصف: | Previously, it has been shown that rapid cooling of yttrium-iron-garnet (YIG)/platinum (Pt) nano structures, preheated by an electric current sent through the Pt layer, leads to overpopulation of a magnon gas and to subsequent formation of a Bose-Einstein condensate (BEC) of magnons. The spin Hall effect (SHE), which creates a spin-polarized current in the Pt layer, can inject or annihilate magnons depending on the electric current and applied field orientations. Here we demonstrate that the injection or annihilation of magnons via the SHE can prevent or promote the formation of a rapid cooling induced magnon BEC. Depending on the current polarity, a change in the BEC threshold of -8% and +6% was detected. These findings demonstrate a new method to control macroscopic quantum states, paving the way for their application in spintronic devices. |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.127.237203 |
| URL الوصول: | http://arxiv.org/abs/2102.13481 |
| رقم الأكسشن: | edsarx.2102.13481 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.127.237203 |
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