Tunable Non-local Coupling between Kondo Impurities

Abstract

We study the tuning mechanisms of the Ruderman-Kittel-Kasuya-Yosida (RKKY) exchange interaction between two lateral quantum dots in the Kondo regime. At zero magnetic field we observe the expected splitting of the Kondo resonance and measure the RKKY interaction strength J as a function of the asymmetry between the two Kondo temperatures. At finite magnetic fields a chiral coupling between the quantum dots is observed in the Kondo chessboard and we probe the presence of the exchange interaction by analyzing the Kondo temperature with magnetic field.

4 pages, 4 figures

References in corpus (5)

• Fano-Kondo effect in side-coupled double quantum dots at finite temperatures and the importance of the two-stage Kondo screening
• Transport spectroscopy of Kondo quantum dots coupled by RKKY interaction
• Non-local Control of the Kondo Effect in a Double Quantum Dot-Quantum Wire Coupled System
• Multiple transitions of the spin configuration in quantum dots
• Probing a Kondo correlated quantum dot with spin spectroscopy

Cited by in corpus (4)

• Decoherence and lead induced inter-dot coupling in nonequilibrium electron transport through interacting quantum dots: A hierarchical quantum master equation approach
• Cooling by heating in nonequilibrium nanosystems
• Non-local control of spin-spin correlation in finite geometry helical edge
• Competition between Kondo screening and quantum Hall edge reconstruction