Searching for axion dark matter with magnetic resonance force microscopy

• URL: http://arxiv.org/abs/2512.12120v1
• Date: Sat, 13 Dec 2025 01:21:35 GMT
• Title: Searching for axion dark matter with magnetic resonance force microscopy
• Authors: Elham Kashi, Muhammad Hani Zaheer, Ryan Petery, Swati Singh,
• Abstract summary: We propose a magnetic resonance force microscopy (MRFM) search for axion dark matter around 1 GHz.<n>Experiment leverages the axion's derivative coupling to electrons, which induces an effective A.C. magnetic field on a sample of electron spins polarized by a D.C. magnetic field and a micromagnet.<n>We show that current technology can be used to put constraints competitive with those from laboratory experiments with just a minute of integration time.
• Score: 0.1499944454332829
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a magnetic resonance force microscopy (MRFM) search for axion dark matter around 1 GHz. The experiment leverages the axion's derivative coupling to electrons, which induces an effective A.C. magnetic field on a sample of electron spins polarized by a D.C. magnetic field and a micromagnet. A second pump field at a nearby frequency enhances the signal, with the detuning matched to the resonant frequency of a magnet-loaded mechanical oscillator. The resulting spin-dependent force is detected with hih sensitivity via optical interferometry. Accounting for the relevant noise sources, we show that current technology can be used to put constraints competitive with those from laboratory experiments with just a minute of integration time. Furthermore, varying the pump field frequency and D.C. magnetic field allows one to scan the axion mass. Finally, we explore this setup's capability to put constraints on other dark matter - Standard Model couplings.

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