Nanoscale tipping bucket effect in a quantum dot transistor-based counter

F. Hartmann, P. Maier, M. Rebello Sousa Dias, S. Göpfert, L. K. Castelano, M. Emmerling, C. Schneider, S. Höfling, M. Kamp, Y. V. Pershin, G. E. Marques, V. Lopez-Richard, L. Worschech

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

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 theamounts 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.
Original languageEnglish
Pages (from-to)2273-2279
Number of pages7
JournalNano Letters
Volume17
Issue number4
Early online date15 Mar 2017
DOIs
Publication statusPublished - 12 Apr 2017

Keywords

  • Quantum dot transistor
  • Memcapacitor
  • Counter
  • Floating gate
  • Quantum capacitance
  • Periodic reset

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