Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1545819 | Physica E: Low-dimensional Systems and Nanostructures | 2010 | 4 Pages |
Abstract
We theoretically investigated the effects of the observation by a quantum dot charge sensor on an Aharonov–Bohm effect in a laterally coupled double quantum dot using the interpolative 2nd-order perturbation theory. In particular, we introduce the notion of the coherent indirect coupling, which characterizes the strength of the indirect coupling between two quantum dots via the reservoir. As the Coulomb interaction VSVS for the charge sensing increases, the linear conductance through a double quantum dot decreases because of the many-body correlation effect. The visibility of Aharonov–Bohm oscillation in the linear conductance behaves super-linearly for weak sensing interaction regime and sub-linearly for strong sensing interaction regime.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
T. Kubo, Y. Tokura, T. Hatano, S. Amaha, S. Teraoka, S. Tarucha,