Detection of sub-MeV dark matter with three-dimensional Dirac materials
Detection of sub-MeV dark matter with three-dimensional Dirac materials
We propose the use of three-dimensional Dirac materials as targets for direct detection of sub-MeV dark matter. Dirac materials are characterized by a linear dispersion for low-energy electronic excitations, with a small band gap of $\mathcal{O}(\mathrm{meV})$ if lattice symmetries are broken. Dark matter at the keV scale carrying kinetic energy …