Few electron double quantum dots in InAs/InP nanowire heterostructures

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.

• Författare: Andreas Fuhrer; Linus Fröberg; Jonas Pedersen; Magnus Larsson; Andreas Wacker; Mats-Erik Pistol; Lars Samuelson
• Avdelning/ar: Fasta tillståndets fysik; Matematisk fysik
• Publiceringsår: 2007
• Språk: Engelska
• Sidor: 243-246
• Publikation/Tidskrift/Serie: Nano Letters
• Volym: 7
• Issue: 2
• Länkar: http://dx.doi.org/10.1021/nl061913f
• 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