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Correlation-induced conductance suppression at level degeneracy in a quantum dot

Nilsson, H; Karlström, O; Larsson, Marcus; Caroff, Philippe; Pedersen, J N; Samuelson, Lars; Wacker, A; Wernersson, Lars-Erik; Xu, H. Q.

Description

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...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
URI: http://hdl.handle.net/1885/79253
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.104.186804

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