ERA NanoSci - Coupling of Single Quantum Dots to Two-Dimensional Systems

• Antragsteller: Professor Dr. Dieter Bimberg; Privatdozent Dr. Martin Geller
• Fachliche Zuordnung: Experimentelle Physik der kondensierten Materie ; Theoretische Chemie: Elektronenstruktur, Dynamik, Simulation
• Förderung: Förderung von 2009 bis 2013
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 120319092

The interaction between nano-objects of different dimensionality, e.g. electrostatic Coulomb-coupling of zerodimensional quantum dots (QDs) to two-dimensional (2D) systems is of fundamental interest and of great relevance for future charge-based memories. This interaction shall be studied here. The complementary expertise of the partners will allow the innovative approach to study for the first time Sb-based QDs combined with split-gate structures. Precise control of the charge-state of a single QD will be possible. Sb-based QDs in type-II heterostructures have strong hole confinement yielding a potential retention time of many years at room temperature, enabling the analysis of the influence of charged QDs on a 2D system up to 300 K. In the mid-long term perspective, the results will be important for future generations of memories: knowledge of the interaction of a 2D system with a single QD will allow us to reach the ultimate limits of charged-based memories (in particular Flash).

• DFG-Verfahren: Sachbeihilfen
• Internationaler Bezug: Großbritannien, Niederlande
• Beteiligte Personen: Dr. Jens K. Garleff; Professor Dr. Manus Hayne