Temperature dependence of exciton Auger decay process in cuprous oxide

We report a theoretical and experimental study on Auger decay of excitons in Cu2O at a wide range of temperatures, from 2 to 325 K, in single-photon surface excitation. We find that the Auger constant linearly increases with temperature above 100 K. This constant is important for experiments on Bose condensation of excitons.