214 citations · 1.2k across the 36 of their papers we have counts for
11 papers · 1 filter
Determination of the phonon sidebands in the photoluminescence spectrum of semiconductor nanoclusters from ab initio calculations
Peng Han, Gabriel Bester
We propose a theoretical approach based on (constrained) density functional theory and the Franck-Condon approximation for the calculation of the temperature dependent photolumines…
Heavy strain conditions in colloidal core-shell quantum dots and their consequences on the vibrational properties from \emph{Ab initio} calculations
Peng Han, Gabriel Bester
We preform large-scale \emph{ab initio} density functional theory calculations to study the lattice strain and the vibrational properties of colloidal semiconductor core-shell nano…
Supercoupling between heavy-hole and light-hole states in self-assembled quantum dots
Jun-Wei Luo, Gabriel Bester, Alex Zunger
Spintronics, quantum computing and quantum communication science utilizing cubic semiconductors rely largely on the properties of the hole states, composed of light and heavy hole…
Semiempirical pseudopotential approach for nitride-based nanostructures and {\it ab initio} based passivation of free surfaces
Alejandro Molina-Sánchez, Alberto García-Cristóbal, Gabriel Bester
We present a semiempirical pseudopotential method based on screened atomic pseudopotentials and derived from \textit{ab initio} calculations. This approach is motivated by the dema…
Semiconductor quantum dots with light-hole exciton ground state: fabrication and fine structure
Y. H. Huo, B. J. Witek, S. Kumar +11
Quantum dots (QDs) can act as convenient hosts of two-level quantum szstems, such as single electron spins, hole spins or excitons (bound electron-hole pairs). Due to quantum confi…
Effects of charged defects on the electronic and optical properties of self-assembled quantum dots
Ranber Singh, Gabriel Bester
We investigate the effects of point charge defects on the single particle electronic structure, emission energies, fine structure splitting and oscillator strengths of excitonic tr…