125 citations · 125 across the 1 of their papers we have counts for
6 papers
Optical spectroscopy of single quantum dots at tunable positive, neutral and negative charge states
D. V. Regelman, E. Dekel, D. Gershoni +6
We report on the observation of photoluminescence from positive, neutral and negative charge states of single semiconductor quantum dots. For this purpose we designed a structure e…
Theoretical interpretation of the experimental electronic structure of lens shaped, self-assembled InAs/GaAs quantum dots
A. J. Williamson, L. W. Wang, Alex Zunger
We adopt an atomistic pseudopotential description of the electronic structure of self-assembled, lens shaped InAs quantum dots within the ``linear combination of bulk bands'' metho…
Multi-excitons in self-assembled InAs/GaAs quantum dots: A pseudopotential, many-body approach
A. J. Williamson, A. Franceschetti, A. Zunger
We use a many-body, atomistic empirical pseudopotential approach to predict the multi-exciton emission spectrum of a lens shaped InAs/GaAs self-assembled quantum dot. We discuss th…
A pseudopotential study of electron-hole excitations in colloidal, free-standing InAs quantum dots
A. J. Williamson, Alex Zunger
Excitonic spectra are calculated for free-standing, surface passivated InAs quantum dots using atomic pseudopotentials for the single-particle states and screened Coulomb interacti…
Prediction of a Strain Induced Conduction Band Minimum in Embedded Quantum Dots
A. J. Williamson, Alex Zunger, A. Canning
Free standing InP quantum dots have previously been theoretically and experimentally shown to have a direct band gap across a large range of experimentally accessible sizes. We dem…
Comparison of two methods for describing the strain profiles in quantum dots
C. Pryor, J. Kim, L. W. Wang +2
The electronic structure of interfaces between lattice-mismatched semiconductor is sensitive to the strain. We compare two approaches for calculating such inhomogeneous strain -- c…