Magnon-photon coupling in the noncollinear magnetic insulator Cu2 OSeO3

L. V. Abdurakhimov; S. Khan; N. A. Panjwani; J. D. Breeze; M. Mochizuki; S. Seki; Y. Tokura; J. J.L. Morton; H. Kurebayashi

doi:10.1103/PhysRevB.99.140401

Magnon-photon coupling in the noncollinear magnetic insulator Cu₂ OSeO₃

L. V. Abdurakhimov^*, S. Khan, N. A. Panjwani, J. D. Breeze, M. Mochizuki, S. Seki, Y. Tokura, J. J.L. Morton, H. Kurebayashi

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

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.

Original language	English
Article number	140401
Journal	Physical Review B
Volume	99
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.99.140401
Publication status	Published - 2019 Apr 3

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.99.140401

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title = "Magnon-photon coupling in the noncollinear magnetic insulator Cu2 OSeO3",

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.",

author = "Abdurakhimov, {L. V.} and S. Khan and Panjwani, {N. A.} and Breeze, {J. D.} and M. Mochizuki and S. Seki and Y. Tokura and Morton, {J. J.L.} and H. Kurebayashi",

note = "Funding Information: Acknowledgments. This work was partly supported by the Grants-in-Aid for Scientific Research (Grants No. 18H03685, No. 17H05186, and No. 16K13842) from JSPS, and by the European Union's Horizon 2020 programme [Grant Agreements No. 688539 (MOS-QUITO) and No. 279781 (ASCENT)] as well as the Engineering and Physical Science Research Council UK through UNDEDD project (EP/K025945/1), and projects EP/K011987/1 and EP/S000798/1. Publisher Copyright: {\textcopyright} 2019 American Physical Society. UK.",

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AU - Abdurakhimov, L. V.

AU - Khan, S.

AU - Panjwani, N. A.

AU - Breeze, J. D.

AU - Mochizuki, M.

AU - Seki, S.

AU - Tokura, Y.

AU - Morton, J. J.L.

AU - Kurebayashi, H.

N1 - Funding Information: Acknowledgments. This work was partly supported by the Grants-in-Aid for Scientific Research (Grants No. 18H03685, No. 17H05186, and No. 16K13842) from JSPS, and by the European Union's Horizon 2020 programme [Grant Agreements No. 688539 (MOS-QUITO) and No. 279781 (ASCENT)] as well as the Engineering and Physical Science Research Council UK through UNDEDD project (EP/K025945/1), and projects EP/K011987/1 and EP/S000798/1. Publisher Copyright: © 2019 American Physical Society. UK.

PY - 2019/4/3

Y1 - 2019/4/3

N2 - 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.

AB - 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.

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Magnon-photon coupling in the noncollinear magnetic insulator Cu₂ OSeO₃

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