Self-excited Oscillations of Charge-Spin Accumulation Due to Single-electron Tunneling
Mesoscale and Nanoscale Physics
2015-03-14 v2
Abstract
We theoretically study electronic transport through a layer of quantum dots connecting two metallic leads. By the inclusion of an inductor in series with the junction, we show that steady electronic transport in such a system may be unstable with respect to temporal oscillations caused by an interplay between the Coulomb blockade of tunneling and spin accumulation in the dots. When this instability occurs, a new stable regime is reached, where the average spin and charge in the dots oscillate periodically in time. The frequency of these oscillations is typically of the order of 1GHz for realistic values of the junction parameters.
Keywords
Cite
@article{arxiv.1004.0651,
title = {Self-excited Oscillations of Charge-Spin Accumulation Due to Single-electron Tunneling},
author = {Danko Radic and Anatoly M. Kadigrobov and Leonid Y. Gorelik and Robert I. Shekhter and Mats Jonson},
journal= {arXiv preprint arXiv:1004.0651},
year = {2015}
}