Phys. Rev. B 73, 241305(R) (2006) [4 pages]

Kondo effect in double quantum dots with interdot repulsion

Abstract

References

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J. Mravlje¹, A. Ramšak^2,1, and T. Rejec^1,2,3
¹Jožef Stefan Institute, Ljubljana, Slovenia
²Faculty of Mathematics and Physics, University of Ljubljana, Slovenia
³Department of Physics, Ben-Gurion University, Beer-Sheva, Israel

Received 7 March 2006; published 9 June 2006

We investigate a symmetrical double quantum dot system serially attached to the leads. The emphasis is on the numerical analysis of finite interdot tunneling in the presence of interdot repulsive capacitive coupling. The results reveal the competition between extended Kondo phases and local singlet phases in spin and charge degrees of freedom. The corresponding phase diagram is determined quantitatively.

URL:

http://link.aps.org/doi/10.1103/PhysRevB.73.241305

DOI:

10.1103/PhysRevB.73.241305

PACS:

73.23.−b, 73.63.Kv, 72.15.Qm

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Phys. Rev. B 73, 241305(R) (2006) [4 pages]

Kondo effect in double quantum dots with interdot repulsion