We propose and study a new class of superconducting detectors which are sensitive to O(meV) electron recoils from dark matter-electron scattering. Such devices could detect dark matter as light as the warm dark matter limit, mX > keV. We compute the rate of dark matter scattering off of free electrons in a (superconducting) metal, including the relevant Pauli blocking factors. We demonstrate that classes of dark matter consistent with terrestrial and cosmological/astrophysical constraints could be detected by such detectors with a moderate size exposure.
@article{arxiv.1504.07237,
title = {Superconducting Detectors for Super Light Dark Matter},
author = {Yonit Hochberg and Yue Zhao and Kathryn M. Zurek},
journal= {arXiv preprint arXiv:1504.07237},
year = {2016}
}