Strong exciton binding in quantum structures through remote dielectric confinement
材料科学
2009-10-31 v1
摘要
We propose a new type of hybrid systems formed by conventional semiconductor nanostructures with the addition of remote insulating layers, where the electron-hole interaction is enhanced by combining quantum and dielectric confinement over different length scales. Due to the polarization charges induced by the dielectric mismatch at the semiconductor/insulator interfaces, we show that the exciton binding energy can be more than doubled. For conventional III-V quantum wires such remote dielectric confinement allows exciton binding at room temperature.
引用
@article{arxiv.cond-mat/9804029,
title = {Strong exciton binding in quantum structures through remote dielectric confinement},
author = {G. Goldoni and F. Rossi and E. Molinari},
journal= {arXiv preprint arXiv:cond-mat/9804029},
year = {2009}
}
备注
4 pages, 3 PostScript figures embedded, best printed in color. Uses RevTex, multicol, and psfig styles. To appear in Phys. Rev. Lett