Binding energy of magneto-biexcitons in semiconductor nano-rings

L.M Thu, WT Chiu, Shao-Fu Xue, Ta Chun Lin, Oleksandr Voskoboynikov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

We report a simulation on the magneto-biexciton system of asymmetrical InAs/GaAs nano-rings, using a smooth three dimensional confinement potential which realistically describes electronic properties of the rings. In our calculation, we use the Hartree approximation to calculate the self-consistent energy for exciton and biexciton confined in the system. We simulate recombination energy, binding energy and their diamagnetic shifts and compare those results with experimental data obtained from the magneto-photoluminescence measurement. We found that using the realistic geometry and composition of the asymmetric nano-ring in our simulations we are able to reproduce experimental data with good accuracy.
Original languageAmerican English
Title of host publication14th International Conference on Narrow Gap Semiconductors and Systems (NGS2)
PublisherElsevier Science Publishers B.V.
Pages1149-1153
Number of pages5
Volume3
DOIs
StatePublished - 2010

Keywords

  • magnetoexcitons; nano rings; diamagnetic shift

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