Abdurakhimov, L;
Khan, S;
Panjwani, NA;
Breeze, D;
Mochizuki, M;
Seki, S;
Tokura, Y;
... Kurebayashi, H; + view all
(2019)
Magnon-photon coupling in the noncollinear magnetic insulator Cu2OSeO3.
Physical Review B
, 99
(14)
, Article 140401(R). 10.1103/PhysRevB.99.140401.
Preview |
Text
PhysRevB.99.140401.pdf - Published Version Download (675kB) | Preview |
Abstract
Anticrossing behavior between magnons in the noncollinear chiral magnet Cu2OSeO3 and a two-mode X-band microwave resonator was studied in the temperature range 5–100 K. In the field-induced ferrimagnetic phase, we observed a strong-coupling regime between magnons and two microwave cavity modes with a cooperativity reaching 3600. In the conical phase, cavity modes are dispersively coupled to a fundamental helimagnon mode, and we demonstrate that the magnetic phase diagram of Cu2OSeO3 can be reconstructed from the measurements of the cavity resonance frequency. In the helical phase, a hybridized state of a higher-order helimagnon mode and a cavity mode—a helimagnon polariton—was found. Our results reveal a class of magnetic systems where strong coupling of microwave photons to nontrivial spin textures can be observed.
| Type: | Article |
|---|---|
| Title: | Magnon-photon coupling in the noncollinear magnetic insulator Cu2OSeO3 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.99.140401 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.99.140401 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. / This work received funding from the European Union (EU)’s Horizon 2020 research and innovation programme H2020-ICT-2015 under grant agreement No 688539. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10072598 |
Archive Staff Only
 |
View Item |
