Quintuplet condensation in the skyrmionic insulator Cu2OSeO3 at ultrahigh magnetic fields
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arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866910027507302400 |
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| author | Nomura, T. Rousochatzakis, I. Janson, O. Gen, M. Zhou, X. -G. Ishii, Y. Seki, S. Kohama, Y. Matsuda, Y. H. |
| author_facet | Nomura, T. Rousochatzakis, I. Janson, O. Gen, M. Zhou, X. -G. Ishii, Y. Seki, S. Kohama, Y. Matsuda, Y. H. |
| contents | We report ultrahigh magnetic field Faraday rotation results on the chiral helimagnet Cu2OSeO3, the first Mott insulator showing skyrmion lattice phases and a linear magnetoelectric effect. Between 180 and 300 T, we find signatures of a Bose-Einstein condensation (BEC) of magnons, which can be described as a canted XY ferrimagnet. Due to the magnetoelectric coupling, the transverse magnetic order of the indivual Cu2+ spins is accompanied by a characteristic dome-like electric polarization which is crucial for the observation of the condensate via the Faraday rotation effect. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_12802 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quintuplet condensation in the skyrmionic insulator Cu2OSeO3 at ultrahigh magnetic fields Nomura, T. Rousochatzakis, I. Janson, O. Gen, M. Zhou, X. -G. Ishii, Y. Seki, S. Kohama, Y. Matsuda, Y. H. Strongly Correlated Electrons We report ultrahigh magnetic field Faraday rotation results on the chiral helimagnet Cu2OSeO3, the first Mott insulator showing skyrmion lattice phases and a linear magnetoelectric effect. Between 180 and 300 T, we find signatures of a Bose-Einstein condensation (BEC) of magnons, which can be described as a canted XY ferrimagnet. Due to the magnetoelectric coupling, the transverse magnetic order of the indivual Cu2+ spins is accompanied by a characteristic dome-like electric polarization which is crucial for the observation of the condensate via the Faraday rotation effect. |
| title | Quintuplet condensation in the skyrmionic insulator Cu2OSeO3 at ultrahigh magnetic fields |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2509.12802 |