Correlation Effects in Side-Coupled Quantum Dots
arXiv:0705.4537 · doi:10.1088/0953-8984/19/25/255205
Abstract
Using Wilson's numerical renormalization group (NRG) technique we compute zero-bias conductance and various correlation functions of a double quantum dot (DQD) system. We present different regimes within a phase diagram of the DQD system. By introducing a negative Hubbard U on one of the quantum dots, we simulate the effect of electron-phonon coupling and explore the properties of the coexisting spin and charge Kondo state. In a triple quantum dot (TQD) system a multi-stage Kondo effect appears where localized moments on quantum dots are screened successively at exponentially distinct Kondo temperatures.
13 pages, 10 figures
References in corpus (18)
- Tunable Non-local Spin Control in a Coupled Quantum Dot System
- Generalized Numerical Renormalization Group for Dynamical Quantities
- Transition between Quantum States in a Parallel-Coupled Double-Quantum-Dot
- Two-stage Kondo effect in a quantum dot at high magnetic field
- Strongly correlated regimes in a double quantum-dot device
- Many Body Effects on the Transport Properties of Single-Molecule Devices
- Quantum Phase Transition in a Multi-Level Dot
- Quantum phase transitions in models of coupled magnetic impurities
- Anti-Kondo resonance in transport through a quantum wire with a side-coupled quantum dot
- Suppression of current in transport through parallel double quantum dots
- Magnetotransport through a strongly interacting quantum dot
- Enhanced Conductance Through Side-Coupled Double Quantum Dots
- Singlet-Triplet Transition in lateral Quantum Dots: A Numerical Renormalization Group Study
- Two-stage Kondo effect in a four-electron artificial atom
- Conductance of deformable molecules with interaction
- Kondo effect in side coupled double quantum-dot molecule
- Effect of topology on the transport properties of two interacting dots
- Zero-Bias Conductance Through Side-Coupled Double Quantum Dots
Cited by in corpus (5)
- Fano-Kondo effect in side-coupled double quantum dots at finite temperatures and the importance of the two-stage Kondo screening
- Two-channel Kondo physics in odd impurity chains
- Crossover between two different Kondo couplings in side-coupled double quantum dots
- Kondo screening in high-spin side-coupled two-impurity clusters
- Identifying an effective model for the two-stage-Kondo regime: Numerical renormalization group results