Absorption of sub-MeV fermionic dark matter by electron targets

We study a new class of signals where fermionic dark matter is absorbed by bound electron targets. Fermionic absorption in direct detection and neutrino experiments are sensitive to with sub-MeV mass, probing region parameter space which otherwise challenging detect. calculate the rate energy deposition spectrum xenon-based detectors, making projections for current future experiments. present two possible models that display electrons prospects light other constraints.