Many-body correlations of electrostatically trapped dipolar excitons

Details Many-body correlations of electrostatically trapped dipolar excitons Many-body correlations of electrostatically trapped dipolar excitons

2011-11-30

arxiv.org/abs/1111.7175v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We study the photoluminescence (PL) of a two-dimensional liquid of oriented dipolar excitons in In_{x}Ga_{1-x}As coupled double quantum wells confined to a microtrap. Generating excitons outside the trap and transferring them at lattice temperatures down to T = 240 mK into the trap we create cold quasi-equilibrium bosonic ensembles of some 1000 excitons with thermal de Broglie wavelengths exceeding the excitonic separation. With decreasing temperature and increasing density n <= 5*10^10 cm^{-2} we find an increasingly asymmetric PL lineshape with a sharpening blue edge and a broad red tail which we interpret to reflect correlated behavior mediated by dipolar interactions. From the PL intensity I(E) below the PL maximum at E_{0} we extract at T < 5 K a distinct power law I(E) \sim (E_{0}-E)^-|\alpha| with -|\alpha|\sim -0.8 in the range E_{0}-E of 1.5-4 meV, comparable to the dipolar interaction energy.

Affiliated with

Also associated with

No associations

Rating

Many-body correlations of electrostatically trapped dipolar excitons 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 Many-body correlations of electrostatically trapped dipolar excitons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Many-body correlations of electrostatically trapped dipolar excitons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-8640