Non-local Control of the Kondo Effect in a Double Quantum Dot-Quantum Wire Coupled System

TL;DR

This study demonstrates non-local control of the Kondo effect in a double quantum dot-quantum wire system through low-temperature transport measurements, revealing the influence of spin states and exchange interactions.

Contribution

It introduces a novel experimental setup showing how the Kondo effect can be controlled non-locally via manipulation of coupled quantum dots and wires.

Findings

Non-local control of the Kondo effect achieved.

Modulation of local density of states observed.

RKKY interaction identified as a key mechanism.

Abstract

We have performed low-temperature transport measurements on a double quantum dot-quantum wire coupled device and demonstrated non-local control of the Kondo effect in one dot by manipulating the electronic spin states of the other. We discuss the modulation of the local density of states in the wire region due to the Fano-Kondo antiresonance, and the Ruderman-Kittel-Kasuya-Yoshida (RKKY) exchange interaction as the mechanisms responsible for the observed features.