2006/06/30 by Wei Zhang, Alexander O. Govorov, Garnett W. Bryant · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Nanowire Synthesis and Applications #Plasmonic and Surface Plasmon Research #Quantum Dots Synthesis And Properties #cond-mat.other
paper · pdf · doi:10.1103/physrevlett.97.146804
5 pages, 5 figures, submitted to Phys. Rev. Lett
arxiv created 2006/08/16 · openalex publication_date 2006/10/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Modern nanotechnology opens the possibility of combining nanocrystals of various materials with very different characteristics in one superstructure. Here we study theoretically the optical properties of hybrid molecules composed of semiconductor and metal nanoparticles. Excitons and plasmons in such a hybrid molecule become strongly coupled and demonstrate novel properties. At low incident light intensity, the exciton peak in the absorption spectrum is broadened and shifted due to incoherent and coherent interactions between metal and semiconductor nanoparticles. At high light intensity, the absorption spectrum demonstrates a surprising, strongly asymmetric shape. This shape originates from the coherent internanoparticle Coulomb interaction and can be viewed as a nonlinear Fano effect which is quite different from the usual linear Fano resonance.