1998/12/09 by O. Mauritz, G. Goldoni, Guido Goldoni +4 · 2 citations
Engineering · Materials Science · Physics and Astronomy · #Near-Field Optical Microscopy #Quantum Dots Synthesis And Properties #Semiconductor Quantum Structures and Devices #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevlett.82.847
To appear in Phys. Rev. Lett. - 11 pages, 3 PostScript figures (1 figure in colors) embedded. Uses RevTex, and psfig styles
arxiv created 1998/12/09 · openalex publication_date 1999/01/25 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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, including Coulomb correlation, is derived within the density-matrix formalism 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.