Magnon Condensation and Spin Superfluidity
| Autor: | Bunkov, Yury M., Safonov, Vladimir L. |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Journal of Magnetism and Magnetic Materials, December 2017 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.jmmm.2017.12.029 |
| Popis: | We consider the phenomenon of Bose-Einstein condensation of quasi-equilibrium magnons which leads to a spin superfluidity, the coherent quantum transfer of magnetization in magnetic materials. These phenomena are beyond the classical Landau-Lifshitz-Gilbert paradigm. The critical conditions for excited magnon density for ferro- and antiferromagnets, bulk and thin films are estimated and discussed. The BEC should occur in the antiferromagnetic hematite at much lower excited magnon density compared to the ferromagnetic YIG. Comment: 0 figures |
| Databáze: | arXiv |
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