2000/08/08 by C. Simserides, Constantinos Simserides, U. Hohenester +5
Engineering · Materials Science · Physics and Astronomy · #Absorption (acoustics) #Absorption spectroscopy #Atomic physics #Bohr radius #Condensed matter physics #Coulomb #Coupling (piping) #Exciton #Materials science #Molecular physics #Near-Field Optical Microscopy #Optics #Physics #Quantum Dots Synthesis And Properties #Quantum dot #Quantum mechanics #RADIUS #Renormalization #Semiconductor Quantum Structures and Devices #Spectral line #Wave function #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.62.13657
published as PRB v62, 13 657 (2000) · To appear in Phys. Rev. B. Figures (two in colors) embedded
arxiv created 2000/08/08 · openalex publication_date 2000/11/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate theoretically the spatial dependence of the linear absorption spectra of single and coupled semiconductor quantum dots, where the strong three-dimensional quantum confinement leads to an overall enhancement of Coulomb interaction and, in turn, to a pronounced renormalization of the excitonic properties. We show that---because of such Coulomb correlations and the spatial interference of the exciton wave functions---unexpected spectral features appear whose intensity depends on spatial resolution in a highly nonmonotonic way when the spatial resolution is comparable with the excitonic Bohr radius. We finally discuss how the optical near-field properties of double quantum dots are affected by their coupling.