Report

The Kondo Effect in an Artificial Quantum Dot Molecule

+ See all authors and affiliations

Science  21 Sep 2001:
Vol. 293, Issue 5538, pp. 2221-2223
DOI: 10.1126/science.1063182

You are currently viewing the abstract.

View Full Text

Via your Institution

Log in through your institution

Log in through your institution


Abstract

Double quantum dots provide an ideal model system for studying interactions between localized impurity spins. We report on the transport properties of a series-coupled double quantum dot as electrons are added one by one onto the dots. When the many-body molecular states are formed, we observe a splitting of the Kondo resonance peak in the differential conductance. This splitting reflects the energy difference between the bonding and antibonding states formed by the coherent superposition of the Kondo states of each dot. The occurrence of the Kondo resonance and its magnetic field dependence agree with a simple interpretation of the spin status of a double quantum dot.

  • * To whom correspondence should be addressed. E-mail: yingshe{at}physics.purdue.edu

View Full Text

Related Content