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Axion search with a quantum-limited ferromagnetic haloscope

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arxiv 2001.08940 v1 pith:INSCML2M submitted 2020-01-24 hep-ex quant-ph

N. Crescini , D. Alesini , C. Braggio , G. Carugno , D. D Agostino , D. Di Gioacchino , P. Falferi , U. Gambardella
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C. Gatti G. Iannone C. Ligi A. Lombardi A. Ortolan R. Pengo G. Ruoso L. Taffarello
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classification hep-exquant-ph
keywords axionfieldhaloscopeconstantcorrespondingcoupledcouplingferromagnetic
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abstract

A ferromagnetic axion haloscope searches for Dark Matter in the form of axions by exploiting their interaction with electronic spins. It is composed of an axion-to-electromagnetic field transducer coupled to a sensitive rf detector. The former is a photon-magnon hybrid system, and the latter is based on a quantum-limited Josephson parametric amplifier. The hybrid system consists of ten 2.1 mm diameter YIG spheres coupled to a single microwave cavity mode by means of a static magnetic field. Our setup is the most sensitive rf spin-magnetometer ever realized. The minimum detectable field is $5.5\times10^{-19}\,$T with 9 h integration time, corresponding to a limit on the axion-electron coupling constant $g_{aee}\le1.7\times10^{-11}$ at 95% CL. The scientific run of our haloscope resulted in the best limit on DM-axions to electron coupling constant in a frequency span of about 120 MHz, corresponding to the axion mass range $42.4$-$43.1\,\mu$eV. This is also the first apparatus to perform an axion mass scanning by changing the static magnetic field.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Probing the axion-electron coupling at cavity experiments

    hep-ph 2025-07 conditional novelty 6.0 of 10

    Cavity walls radiate microwave photons when axion dark matter generates a chiral magnetic current at the conductor surface, turning existing haloscope data into a bound on the axion-electron coupling g_ae ≲ 10^-5.

  2. Searching for Axion Dark Matter Near Relaxing Magnetars

    hep-ph 2025-05 conditional novelty 6.0 of 10

    Resonant axion-to-photon conversion near magnetars could be observable with ALMA and SKA, but the predicted line strength and frequency depend heavily on which plasma model is correct.

  3. Enhanced Axion-wind near Earth's Surface

    hep-ph 2025-02 accept novelty 6.0 of 10

    A quadratically coupled ultralight scalar field develops a spatial profile around Earth that can boost the field-gradient 'axion wind' by orders of magnitude at low masses, and a nonzero incoming velocity removes the ...

  4. The Spectrum of Global Axion Strings

    hep-ph 2025-02 conditional novelty 2.0 of 10

    Lattice simulations of global axion string networks, corrected for discretization and oscillation effects, are extrapolated to predict the axion dark matter mass in the 95 to 450 micro-eV band.

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