Intrasubband and intersubband scattering in semiconductor quantum wires

摘要

We have performed low-density (< 10~5 cm~(-1)) time-resolved photoluminescence experiments that probe the relaxation of photo-excited carriers in a quantum wire. Our results show that carrier-carrier collisions are dominant at very short times both for intra- and for inter-subband scattering as only expected if non-Markovian effects are taken into account.