Berlin 2018 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
HL: Fachverband Halbleiterphysik
HL 19: Quantum dots and wires: Transport properties
HL 19.6: Talk
Tuesday, March 13, 2018, 10:45–11:00, A 151
Nanoscale Tipping Bucket Effect In A Quantum Dot Transistor-Based Counter — •Fabian Hartmann1, Patrick Maier1, Mariama Rebello Sousa Dias2, Sebastian Göpfert2, Leonardo Castelano2, Monika Emmerling1, Christian Schneider1, Martin Kamp1, Yuriy Pershin3, Gilmar Marques2, Victor Lopez-Richard2, Sven Höfling1,4, and Lukas Worschech1 — 1Technische Physik, Universität Würzburg — 2Departamento de Fisica, Universidade Federal de Sao Carlos — 3Department of Physics and Astronomy, University of South Carolina — 4SUPA, University of St Andrews
Electronic circuits composed of one or more elements with inherent memory, memristors, memcapacitors, and meminductors, offer lower circuit complexity and enhanced functionality for certain computational tasks. Networks of these elements are proposed for novel computational paradigms that rely on information processing and storage on the same physical platform. We show a nanoscaled memdevice able to act as an electronic analogue of tipping buckets that allows reducing the dimensionality and complexity of a sensing problem by transforming it into a counting problem. The device offers a well adjustable, tunable and reliable periodic reset that is controlled by the amounts of transferred quantum dot charges per gate voltage sweep. When subjected to periodic voltage sweeps the quantum dot (bucket) may require up to several sweeps before a rapid full discharge occurs thus displaying period doubling, period tripling and so on between self-governing reset operations.