Nonequilibrium Steady States and Fano-Kondo Resonances in an AB Ring with a Quantum Dot
arXiv:cond-mat/0603337 · doi:10.1143/JPSJ.75.094712
Abstract
Electron transport through a strongly correlated quantum dot (QD) embedded in an Aharonov-Bohm (AB) ring is investigated with the aid of the finite-U slave-boson mean-field (SBMF) approach extended to nonequilibrium regime. A nonequilibrium steady state (NESS) of the mean-field Hamiltonian is constructed with the aid of the C*-algebraic approach for studying infinitely extended systems. In the linear response regime, the Fano-Kondo resonances and AB oscillations of the conductance obtained from the SBMF approach are in good agreement with those from the numerical renormalization group technique (NRG) by Hofstetter et al. by using twice larger Coulomb interaction. At zero temperature and finite bias voltage, the resonance peaks of the differential conductance tend to split into two. At low bias voltage, the split of the asymmetric resonance can be observed as an increase of the conductance plateau. We also found that the differential conductance has zero-bias maximum or minimum depending on the background transmission via direct tunneling between the electrodes.
arXiv comment24 pages,17 figures
References in corpus (27)
- A Tunable Kondo Effect in Quantum Dots
- The Kondo Effect in the Unitary Limit
- Tuning of the Fano Effect through a Quantum Dot in an Aharonov-Bohm Interferometer
- Kondo Correlations and the Fano Effect in Closed AB-Interferometers
- Fano and Kondo resonance in electronic current through nanodevices
- Out-of-equilibrium Kondo effect in Double Quantum Dots
- Mesoscopic Fano Effect in a Quantum Dot Embedded in an Aharonov-Bohm Ring
- Flux-Dependent Level Attraction in Double-Dot Aharonov-Bohm Interferometers
- Observation of the Fano-Kondo Anti-Resonance in a Quantum Wire with a Side-Coupled Quantum Dot
- Transmission Phase Shift of a Quantum Dot with Kondo Correlations
- Anti-Kondo resonance in transport through a quantum wire with a side-coupled quantum dot
- Kondo resonant spectra in coupled quantum dots
- A novel approach to transport through correlated quantum dots
- Entropy production in quantum spin systems
- Fano resonance in electron transport through parallel double quantum dots in the Kondo regime
- Dissipative Transport: Thermal Contacts and Tunnelling Junctions
- Transport through a Strongly Correlated Quantum-Dot with Fano Interference
- Kondo effect and anti-ferromagnetic correlation in transport through tunneling-coupled double quantum dots
- Flux-dependent Kondo temperature in an Aharonov-Bohm interferometer with an in-line quantum dot
- A new perturbation treatment applied to the transport through a quantum dot
- Numerical Studies of Fano Resonance in Quantum dots Embedded in AB Rings
- Nonequilibrium Kondo Effect in a Multi-level Quantum Dot near singlet-triplet transition
- Kondo effect in coupled quantum dots under magnetic fields
- Kondo correlation and spin-flip scattering in spin-dependent transport through a quantum dot coupled to ferromagnetic leads
- Kondo effect in side coupled double quantum-dot molecule
- Mesoscopic Kondo effect of a quantum dot embedded in an Aharonov-Bohm ring with intradot spin-flip scattering
- Nonlinear Transport and Current Fluctuation in an AB Ring with a Quantum Dot
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- Typical pure nonequilibrium steady states and irreversibility for quantum transports
- Universal conductance enhancement and reduction of the two-orbital Kondo effect
- Spin Current Generation as a Nonequilibrium Kondo Effect in a Spin-orbit Mesoscopic Interferometer