Few electron double quantum dots in InAs/InP nanowire heterostructures
Författare
Summary, in English
We report on fabrication of double quantum dots in catalytically grown InAs/InP nanowire heterostructures. In the few-electron regime, starting with both dots empty, our low-temperature transport measurements reveal a clear shell structure for sequential charging of the larger of the two dots with up to 12 electrons. The resonant current through the double dot is found to depend on the orbital coupling between states of different radial symmetry. The charging energies are well described by a capacitance model if next-neighbor capacitances are taken into account.
Avdelning/ar
Publiceringsår
2007
Språk
Engelska
Sidor
243-246
Publikation/Tidskrift/Serie
Nano Letters
Volym
7
Issue
2
Dokumenttyp
Artikel i tidskrift
Förlag
The American Chemical Society (ACS)
Ämne
- Nano Technology
- Condensed Matter Physics
Status
Published
Forskningsgrupp
- Linne Center for Nanoscience and Quantum Engineering
ISBN/ISSN/Övrigt
- ISSN: 1530-6992