Direct Observation of Lateral Coupling Between Self-Assembled Qauntum Dots

Physics – Condensed Matter – Mesoscale and Nanoscale Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

17 pages, 5 figures

Scientific paper

Scattering of carriers between spatially separated zero dimensional states has been observed in a system of self-assembled In_{0.55}Al_{0.45}As quantum dots. We believe the interdot tunneling is mediated by localized states below the barrier band edge. The experiment was performed by taking photoluminescence excitation spectra at 4.2K using a near-field scanning optical microscope. Surprisingly, the excitation spectrum from individual dots does not quench to zero at any energy, even when the energy of the exciting light is tuned below the barrier band edge. On top of this continuum, narrow resonances are observed in the emission lines of individual dots. These resonances tend to occur simultaneously in several emission lines, originating from different quantum dots, evincing interdot scattering.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Direct Observation of Lateral Coupling Between Self-Assembled Qauntum 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 Direct Observation of Lateral Coupling Between Self-Assembled Qauntum Dots, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct Observation of Lateral Coupling Between Self-Assembled Qauntum Dots will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-259081

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.