2009/09/17 by C. S. Liu, C. S. liu, Hong‐Gang Luo +2
Chemistry · Physics and Astronomy · #Biexciton #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Energy (signal processing) #Exciton #Physics #Population #Quantum #Quantum mechanics #Quantum well #Semiconductor Quantum Structures and Devices #Spectroscopy and Laser Applications #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.80.125317
published as Phys. Rev. B 80,125317 (2009) · 8 pages, 5 figures
openalex publication_date 2009/09/17 · arxiv created 2011/03/15 · arxiv updated 2015/05/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Motivated by a recent experiment of spatial and temperature-dependent average exciton energy distribution in coupled quantum wells [S. Yang et al., Phys. Rev. B 75, 033311 (2007)], we investigate the nature of the interactions in indirect excitons. Based on the uncertainty principle, along with a temperature and energy-dependent distribution which includes both population and recombination effects, we show that the interplay between an attractive two-body interaction and a repulsive three-body interaction can lead to a natural and good account for the nonmonotonic temperature dependence of the average exciton energy. Moreover, exciton energy maxima are shown to locate at the brightest regions, in agreement with the recent experiments. Our results provide an alternative way for understanding the underlying physics of the exciton dynamics in coupled quantum wells.