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Transport through an isolated artificial molecule formed from stacked self-assembled quantum dots

Publiceringsår: 2003
Språk: Engelska
Sidor: 2655-2657
Publikation/Tidskrift/Serie: Applied Physics Letters
Volym: 82
Nummer: 16
Dokumenttyp: Artikel
Förlag: American Institute of Physics


We investigate resonant tunneling through two coupled self-assembled quantum dots. The strong confinement and the high crystalline quality provided by the self-assembled dots, in combination with the tunneling coupling between the dots, create a system that may be thought of as an artificial molecule. We are able to isolate one single artificial molecule and detailed investigations of the electrical properties are performed. Peak-to-valley ratios above 1000 and full width half maximum of a few millivolts are measured at 4 K. By changing the temperature we also observe Coulomb blockade effects in a different way. (C) 2003 American Institute of Physics.



  • Physics and Astronomy


  • ISSN: 0003-6951

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