Single-electron tunneling through a double quantum dot

The artificial molecule

authored by

R. Blick, R. Haug, J. Weis, D. Pfannkuche, K. Klitzing, K. Eberl

Abstract

Single-electron tunneling through two coupled quantum dots is strongly influenced by the electrostatic interaction between the dots. At low temperatures, we observe the formation of a molecularlike state in the double-dot system. The dots are defined by split gates in an (Formula presented)(Formula presented)As-GaAs heterostructure. They are of different size and coupled in series, leading to two different charging energies. In the linear transport regime we find the charging diagram for the double quantum dot. This diagram exhibits the operation points of the system to be employed as an electron pump.

External Organisation(s)

Max Planck Institute for Solid State Research (MPI-FKF)

Type

Article

Journal

Physical Review B - Condensed Matter and Materials Physics

Volume

53

Pages

7899-7902

No. of pages

4

ISSN

1098-0121

Publication date

01.01.1996

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials, Condensed Matter Physics

Electronic version(s)

https://doi.org/10.1103/PhysRevB.53.7899 (Access: Unknown)