Abstract
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. © 2010 The American Physical Society.
Original language | English |
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Journal | Physical Review Letters |
Volume | 104 |
Issue number | 18 |
Pages (from-to) | 186804 |
ISSN | 0031-9007 |
DOIs | |
Publication status | Published - 2010 |
Externally published | Yes |