Poster: Combined Control Mechanisms of the Interatomic Coulombic Electron Capture in Paired Quantum Dots

SASCHA BUBECK; AXEL MOLLE; FEDERICO M. PONT; ESSAM RADWAN; ANNIKA BANDE

Dresden

Congreso; DPG spring conference Dresden 2017; 2017

DPG

Ultrafast Interatomic Coulomb Electron Capture (ICEC) is a process in which a species A is capturing a free electron. This is mediated by long-range Coulomb-interaction with a bound electron in a neighbouring species B in such a way that the transferred energy releases the bound electron of species B into the continuum.First predicted for atoms and molecules, ICEC has been established as an important energy-transfer process in paired-quantum-dot systems [1] .It was shown that semiconductor material variations signify one of the important control mechanisms for the ICEC process. Additionally, a related energy transfer-process in quantum dots was found to be controllable by the geometries of both neighbouring quantum dots [2] .In this work, both effects are combined to understand the coupling of those two control mechanisms and predict advantageous experimental setups of the paired-quantum-dot system, underlining that ICEC proves to be a potential candidate for future energy-selective devices.