Direct Dark Matter search with heat-and-ionization detectors

The search for Dark Matter (DM) with heat-and-ionization detectors is one of the most sensitive direct approaches to detect a recoil signal of DM particles such as neutralinos, or weakly interacting massive particles (WIMPs), from scattering off nuclei within the detector material. We present the experimental technique and its results using germanium (Ge) and silicon (Si) bolometric detectors in the EDELWEISS (Expérience pour détecter les WIMPs en site souterrain) and CDMS (Cryogenic Dark Matter Search) experiments. The experimental configuration for the second phase of EDELWEISS is described.