Coexistence of parallel and series current paths in parallel-coupled double quantum dots in nonlinear transport regime
Mesoscale and Nanoscale Physics
2021-10-13 v1
Abstract
We investigated the electron transport properties of parallel-coupled double quantum dot (DQD) devices under magnetic fields. When a low magnetic field was applied, electron tunneling through parallel-coupled DQDs was observed. Under a high magnetic field, we observed both electron tunneling through parallel- and series-coupled DQDs under nonlinear transport conditions. In addition, the Pauli spin blockade was observed, indicating tunneling through the series-coupled DQDs. We attribute these behaviors to the magnetic-field-induced changes in the tunnel-couplings that allow the coexistence of the current paths of the parallel and series configurations.
Keywords
Cite
@article{arxiv.2110.05857,
title = {Coexistence of parallel and series current paths in parallel-coupled double quantum dots in nonlinear transport regime},
author = {Tsuyoshi Hatano and Toshihiro Kubo and Shinichi Amaha and Yasuhiro Tokura and Seigo Tarucha},
journal= {arXiv preprint arXiv:2110.05857},
year = {2021}
}
Comments
18 pages, 7 figures