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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.17007 |
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| _version_ | 1866912388069982208 |
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| author | Kondo, Dan Morimoto, Takahiro Osaki, Genta Sichanugrist, Thanaporn |
| author_facet | Kondo, Dan Morimoto, Takahiro Osaki, Genta Sichanugrist, Thanaporn |
| contents | We propose a novel method to detect axion dark matter based on a topological phenomenon known as the shift current. We exploit the second-order nonlinearity of the shift current by applying a strong oscillating electric field. This field enhances the axion-induced shift current signal and downconverts its frequency to a more accessible range. The non-dissipative nature of the shift current allows us to achieve broadband detection via difference frequency generation. We demonstrate, using Type-I Weyl semimetal TaAs property, the possibility of probing the parameter space of the QCD axion in the mass range of $\mathcal{O}(10)$ - $\mathcal{O}(100) \ \rm meV$ corresponding to the photon coupling of $g_{aγγ}\simeq$ $\mathcal{O}(10^{-12})$ - $\mathcal{O}(10^{-11})~\text{GeV}^{-1}$, respectively. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_17007 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Broadband Search for Axion Dark Matter via Shift Current Kondo, Dan Morimoto, Takahiro Osaki, Genta Sichanugrist, Thanaporn High Energy Physics - Phenomenology We propose a novel method to detect axion dark matter based on a topological phenomenon known as the shift current. We exploit the second-order nonlinearity of the shift current by applying a strong oscillating electric field. This field enhances the axion-induced shift current signal and downconverts its frequency to a more accessible range. The non-dissipative nature of the shift current allows us to achieve broadband detection via difference frequency generation. We demonstrate, using Type-I Weyl semimetal TaAs property, the possibility of probing the parameter space of the QCD axion in the mass range of $\mathcal{O}(10)$ - $\mathcal{O}(100) \ \rm meV$ corresponding to the photon coupling of $g_{aγγ}\simeq$ $\mathcal{O}(10^{-12})$ - $\mathcal{O}(10^{-11})~\text{GeV}^{-1}$, respectively. |
| title | Broadband Search for Axion Dark Matter via Shift Current |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2505.17007 |