The experimental detection of the Bose-Einstein condensate of magnons in coupled nuclear-electron spin precession in antiferromagnets brings the prospect of its use for magnonics and computer calculations. In particular, an attractive feature of such systems is a relatively large spin coherence time compared to traditional iron yttrium garnet samples. However, the observed Bose-Einstein condensation of magnons contradicts the Suhl-Nakamura model and the Bloch equations, which are usually used for these systems. The results of a direct experiment in antiferromagnetic MnCO3 performed in this work indicate that the Suhl-Nakamura model and the Bloch equations cannot adequately describe the coupled nuclear-electron spin motion at large levels of magnon excitation.
Publisher
Springer Nature
ISSN
0021-3640
1090-6487
DOI
info:doi/10.1134/S0021364020140076
Rights
This is a post-peer-review, pre-copyedit version of an article published in JETP Letters. The final authenticated version is available online at: https://doi.org/10.1134/S0021364020140076.
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Features of the Coupled Nuclear–Electron Spin Precession in the Bose–Einstein Condensate of Magnons
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