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

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Abstract

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.

Detaljer

Författare
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Den kondenserade materiens fysik
  • Elektroteknik och elektronik
Originalspråkengelska
Sidor (från-till)2655-2657
TidskriftApplied Physics Letters
Volym82
Utgivningsnummer16
StatusPublished - 2003
PublikationskategoriForskning
Peer review utfördJa