Excitons and Two-dimensional Screening: Critical Screening Lengths
Materials Science
2007-05-23 v1
Abstract
A beautiful and intriguing relationship has recently been proposed to express the critical screening lengths associated with the apparition of new bound states for the two-dimensional statically screened Coulomb potential. Semiclassical quantum theory show that this relationship is unfortunately not strictly exact. These results are confirmed by a variational calculation, which provides upper bounds for the critical screening lengths in the case .
Keywords
Cite
@article{arxiv.cond-mat/0110464,
title = {Excitons and Two-dimensional Screening: Critical Screening Lengths},
author = {Christian Tanguy},
journal= {arXiv preprint arXiv:cond-mat/0110464},
year = {2007}
}
Comments
3 pages; OECS7 conference, Montpellier, France (September 3-7, 2001)