paper

New constraints on dark matter from superconducting nanowires

arXiv:2110.01586 · doi:10.1103/PhysRevD.106.112005

Abstract

Superconducting nanowires, a mature technology originally developed for quantum sensing, can be used as a target and sensor with which to search for dark matter interactions with electrons. Here we report on a 180-hour measurement of a tungsten silicide superconducting nanowire device with a mass of 4.3 nanograms. We use this to place new constraints on dark matter--electron interactions, including the strongest terrestrial constraints to date on sub-MeV (sub-eV) dark matter that interacts with electrons via scattering (absorption) processes.

5 pages + appendices, 5 figures. Matched published version

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