Dynamically induced Kondo effect in double quantum dots

M. N. Kiselev, K. A. Kikoin, L. W. Molenkamp

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

A new mechanism of resonance Kondo tunneling via a composite quantum dot (QD) is proposed. It is shown that, owing to the hidden dynamic spin symmetry, the Kondo effect can be induced by a finite voltage eV applied to the contacts at an even number N of electrons in a QD with zero spin in the ground state. As an example, a double QD is considered in a parallel geometry with N = 2, which possesses the SO(4) type symmetry characteristic of a singlet-triplet pair. In this system, the Kondo peak of conductance appears at an eV value compensating for the exchange splitting.

Original languageEnglish
Pages (from-to)366-370
Number of pages5
JournalJETP Letters
Volume77
Issue number7
DOIs
StatePublished - 1 Dec 2003

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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