Self-excited oscillations of charge-spin accumulation due to single-electron tunneling

D. Radić, A. M. Kadigrobov, L. Y. Gorelik, R. I. Shekhter, M. Jonson

Research output: Contribution to journalArticle

4 Citations (Scopus)

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 on the order of 1GHz for realistic values of the junction parameters. © 2010 The American Physical Society.

Original languageEnglish
Article number125311
JournalPhysical Review B: Condensed Matter and Materials Physics
Volume82
Issue number12
DOIs
Publication statusPublished - 9 Sep 2010

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