Electron pumping through quantum dots defined in parallel etched quantum wires

Autor:	Stephen P. Giblin, L. Li, M. D. Blumenthal, G. A. C. Jones, Michael Pepper, Tjbm Janssen, Dustin Anderson, David A. Ritchie, Bernd Kaestner
Rok vydání:	2008
Předmět:	Physics Nanoelectronics Condensed matter physics Quantum dot Quantum wire Homogeneity (physics) General Engineering Macroscopic quantum phenomena Electron Quantum Electron transport chain
Zdroj:	Microelectronics Journal. 39:365-368
ISSN:	0026-2692
DOI:	10.1016/j.mejo.2008.01.004
Popis:	We present the first results on electron transport through a tuneable-barrier double quantum dot electron pump. This device could yield twice the current to a single-dot pump previously reported [M.D. Blumenthal, B. Kaestner, L. Li, S. Giblin, , T.J.B.M. Janssen, M. Pepper, D. Anderson, G. Jones, D.A. Ritchie, Gigahertz quantized charge pumping, Nat. Phys. 3 (2007) 343], at the same operating frequency. The two quantum wires forming the device were not sufficiently homogeneous for pumping to be observed through both dots simultaneously, but sufficient homogeneity should be attainable in future batches of devices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c17f68d4df11a8183ba17cf86e4558eb https://doi.org/10.1016/j.mejo.2008.01.004 Zobrazit plný text záznamu Full Text from ScienceDirect