Local Optical Spectroscopy in Quantum Confined Systems: A Theoretical Description
Materials Science
2009-10-31 v1
Abstract
A theoretical description of local absorption is proposed in order to investigate spectral variations on a length scale comparable with the extension of the relevant quantum states. A general formulation is derived within the density-matrix formalism including Coulomb correlation, and applied to the prototypical case of coupled quantum wires. The results show that excitonic effects may have a crucial impact on the local absorption with implications for the spatial resolution and the interpretation of near-field optical spectra.
Cite
@article{arxiv.cond-mat/9812145,
title = {Local Optical Spectroscopy in Quantum Confined Systems: A Theoretical Description},
author = {O. Mauritz and G. Goldoni and F. Rossi and E. Molinari},
journal= {arXiv preprint arXiv:cond-mat/9812145},
year = {2009}
}
Comments
To appear in Phys. Rev. Lett. - 11 pages, 3 PostScript figures (1 figure in colors) embedded. Uses RevTex, and psfig styles