Kondo-Dicke resonances in electronic transport through triple quantum dots

2008/03/28 by Piotr Trocha, J. Barnaś, Józef Barnaś · 1 citation
Computer Science · Physics and Astronomy · #Boson #Condensed matter physics #Coulomb #Electron #Kondo effect #Physics #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum dot #Quantum electrodynamics #Quantum mechanics #Semiconductor Quantum Structures and Devices #Slave boson #Superconductivity #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.78.075424

published as Phys. Rev. B 78, 075424 (2008) · 8 pages, 10 figures

arxiv created 2008/03/28 · openalex publication_date 2008/08/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Electronic transport through a triple quantum dot system, with only a single dot coupled directly to external leads, is considered theoretically. The model includes Coulomb correlations in the central dot, while such correlations in the two side-coupled dots are omitted. The infinite-U mean-field slave-boson approach is used to obtain basic transport characteristics in the Kondo regime. When tuning the position of the side-coupled dots' levels, transition from subradiant to superradiant-like mode (and vice versa) has been found in the spectral function, in analogy to the Dicke effect in atomic physics. Bias dependence of the differential conductance and zero-frequency shot noise is also analyzed.

Citations

• Quasistates and their relation to the Dicke effect in a mesoscopic ring coupled to a reservoir
• Controlling Fano and Dicke effects via a magnetic flux in a two-site Anderson model
• Spin-polarized transport through a single-level quantum dot in the Kondo regime
• Low Temperature Transport through a Quantum Dot: The Anderson Model out of Equilibrium
• Dicke effect in the tunnel current through two double quantum dots
• Fano resonance in electron transport through parallel double quantum dots in the Kondo regime
• Interference effects in the conductance of multilevel quantum dots

Cited by

• The tunnel magnetoresistance in chains of quantum dots weakly coupled to external leads

Related

• Transport through capacitively coupled embedded and T-shape quantum dots in the Kondo range
• Interference Effects on Kondo-Assisted Transport through Double Quantum Dots
• Transport Regimes in a Double Quantum Dot Device
• Non-Crossing Approximation Study of Multi-Orbital Kondo Effect in Quantum Dot Systems
• Strongly correlated regimes in a double quantum-dot device