Evidence for excitonic polarons in InAs/GaAs quantum dots

Details Evidence for excitonic polarons in InAs/GaAs quantum dots Evidence for excitonic polarons in InAs/GaAs quantum dots

2006-09-20

arxiv.org/abs/cond-mat/0609506v1

Physics

Condensed Matter

Materials Science

Scientific paper

10.1103/PhysRevB.73.075320

We investigate the interband transitions in several ensembles of self-assembled InAs/GaAs quantum dots by using photoluminescence excitation spectroscopy under strong magnetic field. Well defined resonances are observed in the spectra. A strong anticrossing between two transitions is observed in all samples, which cannot be accounted for by a purely excitonic model. The coupling between the mixed exciton-LO phonon states is calculated using the Fr\"{o}hlich Hamiltonian. The excitonic polaron energies as well as the oscillator strengths of the interband transitions are determined. An anticrossing is predicted when two exciton-LO phonon states have close enough energies with phonon occupations which differ by one. A good agreement is found between the calculations and the experimental data evidencing the existence of excitonic polarons.

Affiliated with

Also associated with

No associations

Rating

Evidence for excitonic polarons in InAs/GaAs quantum dots does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evidence for excitonic polarons in InAs/GaAs quantum dots, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for excitonic polarons in InAs/GaAs quantum dots will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-350605