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arXiv · 2606.13595

Probing Axion Dark Matter via the Chiral Magnetic Effect in Zero-Bias Weyl Semimetals

Debajit Bose·Prataya Chandra·Sudhansu S. Mandal·Tirtha Sankar Ray
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Abstract

Sub-eV axion dark matter behaves as a coherent classical field that can induce macroscopic current in quantum materials. We explore the possibility of axion detection via the chiral magnetic effect in zero-bias Weyl semimetals under a static external magnetic field. We demonstrate that for a $1 \, {\rm cm^2}$ sample in a realistic $10 \, {\rm T}$ magnetic field, the signal remains in the observable femto-ampere range. Utilizing state-of-the-art SQUID-based current readout, the setup can probe axion-electron couplings below existing stellar cooling bounds across a broad range of axion masses.

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Debajit Bose, Prataya Chandra, Sudhansu S. Mandal, Tirtha Sankar Ray. 2026-06-11. Probing Axion Dark Matter via the Chiral Magnetic Effect in Zero-Bias Weyl Semimetals. https://arxiv.org/abs/2606.13595

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