Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2008-04-16
Phys. Rev. B 78, 035411 (2008)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
6 pages, 5 figures
Scientific paper
10.1103/PhysRevB.78.035411
We evaluate the effect of diffraction-limited resolution of the optical system on the estimates of the coherence length of 2D excitons deduced from the interferometric study of the exciton emission. The results are applied for refining our earlier estimates of the coherence length of a cold gas of indirect excitons in coupled quantum wells [S. Yang et al., Phys. Rev. Lett. 97, 187402(2006)]. We show that the apparent coherence length is well approximated by the quadratic sum of the actual exciton coherence length and the diffraction correction given by the conventional Abbe limit divided by 3.14. In practice, accounting for diffraction is necessary only when the coherence length is smaller than about one wavelength. The earlier conclusions regarding the strong enhancement of the exciton coherence length at low temperatures remain intact.
Butov Leonid V.
Fogler Michael M.
Gossard Arthur. C.
Hammack A. T.
Yang Sen
No associations
LandOfFree
Effect of spatial resolution on the estimates of the coherence length of excitons in quantum wells 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 Effect of spatial resolution on the estimates of the coherence length of excitons in quantum wells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effect of spatial resolution on the estimates of the coherence length of excitons in quantum wells will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-506230