Interplay between periodicity and nonlinearity of indirect excitons in coupled quantum wells

T. F. Xu, X. L. Jing, H. G. Luo, W. C. Wu, C. S. Liu

研究成果: 雜誌貢獻文章

1 引文 斯高帕斯(Scopus)

摘要

Inspired by a recent experiment of localizationdelocalization transition (LDT) of indirect excitons in lateral electrostatic lattices (Remeika etal 2009 Phys. Rev. Lett. 102 186803), we theoretically investigate the interplay between periodic potential and nonlinear interactions of indirect excitons in coupled quantum wells. It is shown that the model involving both attractive two-body and repulsive three-body interactions can lead to a natural account for the LDT of excitons across the lattice when reducing lattice amplitude or increasing particle density. In addition, the observations that the smooth component of the photoluminescent energy increases with increasing exciton density and that the exciton interaction energy is close to the lattice amplitude at the transition are also qualitatively explained. Our model provides an alternative way of understanding the underlying physics of the exciton dynamics in lattice potential wells.

原文英語
文章編號455301
期刊Journal of Physics Condensed Matter
24
發行號45
DOIs
出版狀態已發佈 - 2012 十一月 14

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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