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Axion quasiparticles for axion dark matter detection

Schütte-Engel, Jan; Marsh, David J.E.; Millar, Alexander J.; Sekine, Akihiko; Chadha-Day, Francesca; Hoof, Sebastian; Ali, Mazhar N.; Fong, Kin Chung; Hardy, Edward; Šmejkal, Libor

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Jan Schütte-Engel

David J.E. Marsh

Alexander J. Millar

Akihiko Sekine

Sebastian Hoof

Mazhar N. Ali

Kin Chung Fong

Edward Hardy

Libor Šmejkal


It has been suggested that certain antiferromagnetic topological insulators contain axion quasiparticles (AQs), and that such materials could be used to detect axion dark matter (DM). The AQ is a longitudinal antiferromagnetic spin fluctuation coupled to the electromagnetic Chern-Simons term, which, in the presence of an applied magnetic field, leads to mass mixing between the AQ and the electric field. The electromagnetic boundary conditions and transmission and reflection coefficients are computed. A model for including losses into this system is presented, and the resulting linewidth is computed. It is shown how transmission spectroscopy can be used to measure the resonant frequencies and damping coefficients of the material, and demonstrate conclusively the existence of the AQ. The dispersion relation and boundary conditions permit resonant conversion of axion DM into THz photons in a material volume that is independent of the resonant frequency, which is tuneable via an applied magnetic field. A parameter study for axion DM detection is performed, computing boost amplitudes and bandwidths using realistic material properties including loss. The proposal could allow for detection of axion DM in the mass range between 1 and 10 meV using current and near future technology.


Schütte-Engel, J., Marsh, D. J., Millar, A. J., Sekine, A., Chadha-Day, F., Hoof, S., …Šmejkal, L. (2021). Axion quasiparticles for axion dark matter detection. Journal of Cosmology and Astroparticle Physics, 2021(08), Article 066.

Journal Article Type Article
Acceptance Date Jul 8, 2021
Online Publication Date Aug 31, 2021
Publication Date 2021
Deposit Date Sep 9, 2021
Publicly Available Date Aug 31, 2022
Journal Journal of Cosmology and Astroparticle Physics
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 2021
Issue 08
Article Number 066


Accepted Journal Article (3.3 Mb)

Copyright Statement
This is the Accepted Manuscript version of an article accepted for publication in Journal of Cosmology and Astroparticle Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at

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