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Title: Application of the dot-ring nanostructure to control electrical transport in the Coulomb blockade regime
Authors: Janus-Zygmunt, Iwona
Kędzierska, Barbara
Gorczyca-Goraj, Anna
Kurpas, Marcin
Maśka, Maciej M.
Zipper, Elżbieta
Keywords: nanostruktury; struktura elektronowa; kropki kwantowe
Issue Date: 2014
Citation: Acta Physica Polonica A, Vol. 126, nr 5 (2014), s. 1171-1173
Abstract: Transport properties of a two-dimensional nanostructure composed of a quantum dot surrounded by a quantum ring (dot-ring nanostructure), are discussed. This complex system is a highly controllable object. Conduction through dot-ring nanostructure depends crucially on the coupling strength of its states to the electrodes, which is related to the spatial distribution of the electron's wave functions in dot-ring nanostructure. This distribution can be strongly modi ed, e.g., by the electrical gating so that the ground and excited states move between the inner dot and the outer ring. In this paper we show that this property can be used to control single-electron DC current through dot-ring nanostructure in the Coulomb blockade regime so that it can be used as a single electron transistor.
DOI: 10.12693/APhysPolA.126.1171
ISSN: 0587-4246
Appears in Collections:Artykuły (WNŚiT)

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