Atomic type magnon Bose-Einstein condensation in antiferromagnet
| Autor: | Yury Bunkov, Egor Alakshin, Vyacheslav Kuzmin, Rasul Gazizulin, Alexander Klochkov, Timur Safin, Bunkov Yuriy, Murat Tagirov |
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| Přispěvatelé: | Ultra-basses températures (UBT), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases History Condensed matter physics [PHYS.COND.GAS]Physics [physics]/Condensed Matter [cond-mat]/Quantum Gases [cond-mat.quant-gas] Condensed Matter::Other Magnon Relaxation (NMR) Electron 01 natural sciences 7. Clean energy 010305 fluids & plasmas Computer Science Applications Education law.invention Superfluidity Magnetization law Spin wave 0103 physical sciences Condensed Matter::Strongly Correlated Electrons 010306 general physics Spin (physics) Bose–Einstein condensate |
| Zdroj: | Journal of Physics: Conference Series Journal of Physics: Conference Series, IOP Publishing, 2012, 400, pp.2001. ⟨10.1088/1742-6596/400/3/032001⟩ |
| ISSN: | 1742-6588 1742-6596 |
| DOI: | 10.1088/1742-6596/400/3/032001⟩ |
| Popis: | International audience; The Spin Supercurrent and Bose-Einstein condensation of magnons, similar to an atomic BEC, was observed in 1984 in superfluid 3He-B The same phenomena should exist in solid magnetic systems. We describe here the first observation of magnon BEC in solid easy plain antiferromagnet CsMnF3. We have observed magnon BEC on a mode of coupled Nuclear-Electron precession. The dynamical properties of this mode have many similarities with NMR of superfluid 3He-A The frequency changes with deflection of nuclear magnetization. Furthermore, the involvement of electron ordered subsystem gives the magnon-magnon interaction, spin waves and spin supercurrent, while the nuclear subsystem gives the relatively long time of relaxation. |
| Databáze: | OpenAIRE |
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