Detection of Light Dark Matter With Optical Phonons in Polar Materials
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Abstract
We show that polar materials are excellent targets for direct detection of sub-GeV dark matter due to the presence of gapped optical phonons as well as acoustic phonons with high sound speed. We take the example of Gallium Arsenide (GaAs), which has the properties needed for experimental realization, and where many results can be estimated analytically. We find GaAs has excellent reach to dark photon absorption, can completely cover the freeze-in benchmark for scattering via an ultralight dark photon, and is competitive with other proposals to detect sub-MeV dark matter scattering off nuclei.Keywords
All Related Versions
- Version 1, 2017-12-18, ArXiv
- Version 2, 2018-10-31, ArXiv
- Published version: Physics Letters B, 785, 386.
This publication has 48 references indexed in Scilit:
- First results from the NEWS-G direct dark matter search experiment at the LSMAstroparticle Physics, 2018
- The cosmology of sub-MeV dark matterJournal of High Energy Physics, 2017
- Searching for dark absorption with direct detection experimentsJournal of High Energy Physics, 2017
- New stellar constraints on dark photonsPhysics Letters B, 2013
- Freeze-in production of FIMP dark matterJournal of High Energy Physics, 2010
- The temperature dependence of the LO(T) and TO(T) phonons in GaAs and InPPhysica Status Solidi (b), 1996
- A calorimetric particle detector using an iridium superconducting phase transition thermometerNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1994
- Thermalization of Ballistic Phonon Pulses in Dielectric Crystals Below 1K Using Time-Resolved Thermometry1986
- Handbook of Optical Constants of Solids1985
- Direct and thermal desorption of 4He filmsPhysics Letters A, 1983