Correlation-induced conductance suppression at level degeneracy in a quantum dot.
Författare
Summary, in English
The large, level-dependent g factors in an InSb nanowire quantum dot allow for the occurrence of a variety of level crossings in the dot. While we observe the standard conductance enhancement in the Coulomb blockade region for aligned levels with different spins due to the Kondo effect, a vanishing of the conductance is found at the alignment of levels with equal spins. This conductance suppression appears as a canyon cutting through the web of direct tunneling lines and an enclosed Coulomb blockade region. In the center of the Coulomb blockade region, we observe the predicted correlation-induced resonance. Our findings are supported by numerical and analytical calculations.
Avdelning/ar
Publiceringsår
2010
Språk
Engelska
Publikation/Tidskrift/Serie
Physical Review Letters
Volym
104
Issue
18
Fulltext
- Available as PDF - 479 kB
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Länkar
Dokumenttyp
Artikel i tidskrift
Förlag
American Physical Society
Ämne
- Condensed Matter Physics
Status
Published
Forskningsgrupp
- Linne Center for Nanoscience and Quantum Engineering
- Nanometer structure consortium (nmC)
- Nano
ISBN/ISSN/Övrigt
- ISSN: 1079-7114