Relaxation of a kinetic hole due to carrier-carrier scattering in multisubband single-quantum-well semiconductors

Current relaxation due to hot carrier scattering in graphene

In this paper, we present direct time-domain investigations of the relaxation of electric currents in graphene due to hot carrier scattering. We use coherent control with ultrashort optical pulses to photoinject a current and detect the terahertz (THz) radiation emitted by the resulting current surge. We pre-inject a background of hot carriers using a separate pump pulse, with a variable delay ...

Effect of spectral broadening and electron-hole scattering on carrier relaxation in GaAs quantum dots

Luminescence efficiency in quantum dots has been a matter of some controversy recently. Theoretically, poor efficiency has been predicted owing to the phonon bottleneck in carrier relaxation, while slightly enhanced luminescence has been reported in several experiments. The approach of this letter differs from previous theoretical work in that the scattering rates are computed self-consistently...

Carrier Scattering in Metals and Semiconductors

apparent coincidence with the positron lines has deepened the mystery of the origin of these pairs. Despite such subsequent discoveries, this splendid review, with its full documentation, will remain useful to orient anyone who wants to study the fundamentals of heavy-ion-atom collision physics. The volume concludes with a pedagogic review of beam-foil spectroscopy by one of its practitioners, ...

Carrier-carrier relaxation kinetics in quantum well semiconductor structures with nonparabolic energy bands

Carrier scattering by Auger mechanism in a single quantum wire

We report on time-resolved microphotoluminescence experiments in a single GaAs/GaAlAs V-shaped quantum wire as a function of optical excitation intensity. At low pump power we observe that excitons are localized in quantum boxes formed by the local potential minima existing along the wire axis. As the pump power is increased, state filling of the lowest lying levels of the boxes appears. When t...