2013/05/13 by Yehiel Shilo, Kobi Cohen, Boris Laikhtman +5 · 1 citation
Physics and Astronomy · #Biexciton #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Dipole #Electric field #Exciton #Heterojunction #Physics #Physics of Superconductivity and Magnetism #Population #Quantum mechanics #Semiconductor #Strong Light-Matter Interactions #cond-mat.mes-hall #cond-mat.quant-gas
paper · pdf · doi:10.1038/ncomms3335
arxiv created 2013/05/13 · openalex publication_date 2013/08/23 · arxiv updated 2015/06/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this paper we show experimental evidence of a few correlation regimes of a cold dipolar exciton fluid, created optically in a semiconductor bilayer heterostructure. In the higher temperature regime, the average interaction energy between the particles shows a surprising temperature dependence which is an evidence for correlations beyond the mean field model. At a lower temperature, there is a sharp increase in the interaction energy of optically active excitons, accompanied by a strong reduction in their apparent population. This is an evidence for a sharp macroscopic transition to a dark state as was suggested theoretically.