Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1545821 | Physica E: Low-dimensional Systems and Nanostructures | 2010 | 4 Pages |
Abstract
The zero bias anomaly in the conductance due to Kondo correlations in a quantum dot at Coulomb blockade with an even number of electrons has been only clearly experimentally seen at the singlet–triplet crossing. However, S=1S=1 Kondo correlations should also be present in a dot in the absence of magnetic field if Hund's rule enforces a triplet ground state. We propose that the elusive appearance of the S=1S=1 Kondo anomaly in semiconductor quantum dots is due to spin–orbit interactions, which we find to be a relevant perturbation of the Kondo fixed point in the NRG flow.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
P. Lucignano, M. Fabrizio, A. Tagliacozzo,