2000/10/23 by T. A. Gloor, T.A. Gloor, M. E. Zhitomirsky +3 · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Boron and Carbon Nanomaterials Research #Chemical and Physical Properties of Materials #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1007/s100510170158
published as Eur. Phys. J. B 21, 491 (2001) · RevTEX, 7 pages with 3 figures
arxiv created 2000/10/23 · openalex publication_date 2001/06/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We investigate multiexciton bound states in a semiconducting phase of divalent hexaborides. Due to three degenerate valleys in both the conduction and valence bands the binding energy of a 6-exciton molecule is greatly enhanced by the shell effect. The ground state energies of multiexciton molecules are calculated using the density functional formalism. We also show that charged impurities stabilize multiexciton complexes leading to condensation of localized excitons. These complexes can act as nucleation centers of local moments.