Nonequilibrium charge-Kondo transport through negative-U molecules

Abstract

Low-temperature transport through molecules with effectively negative charging energy U exhibits a charge-Kondo effect. We explore this regime analytically by establishing an exact mapping between the negative-U and the positive-U Anderson models, which is suitable for the description of nonequilibrium transport. We employ this mapping to demonstrate the intimate relation between nonequilibrium tranport in the spin-Kondo and charge-Kondo regimes, and derive analytical expressions for the nonlinear current-voltage chracteristics as well as the shot noise in the latter regime. Applying the mapping in the opposite direction, we elucidate the finding of super-Poissonian noise in the positive-U Anderson model at high temperatures, by relating the correlations between spin flips to pair-tunneling processes at negative U.

11 pages, 5 figures

References in corpus (14)

• Observation of the e/3 Fractionally Charged Laughlin Quasiparticles
• Theory of the Franck-Condon blockade regime
• Many Body Effects on the Transport Properties of Single-Molecule Devices
• Fractional Shot Noise in the Kondo Regime
• Current hysteresis and memory effect in a molecular quantum dot with strong electron-vibron interaction
• Pair tunneling through single molecules
• Quantum transport through a deformable molecular transistor
• Bi-stable tunneling current through a molecular quantum dot
• Electron energy relaxation in the presence of magnetic impurities
• Full counting statistics of strongly non-Ohmic transport through single molecules
• Andreev Reflection Enhanced Shot Noise in Mesoscopic SNS Junctions
• Quantum Monte Carlo method for models of molecular nanodevices
• Josephson tunnelling spectroscopy of negative U centers
• Josephson transport through a Hubbard impurity center

Cited by in corpus (31)

• Transport in molecular states language: Generalized quantum master equation approach
• Spin-thermopower in interacting quantum dots
• Two-Particle Dark State in the Transport through a Triple Quantum Dot
• Mechanism for large thermoelectric power in negative-U molecular quantum dots
• Bunching and anti-bunching in electronic transport
• Transport mirages in single-molecule devices
• Revealing attractive electron-electron interaction in a quantum dot by full counting statistics
• Thermodynamics of the polaron master equation at finite bias
• Thermoelectrics of Interacting Nanosystems -- Exploiting Superselection instead of Time-Reversal Symmetry
• Relaxation of quantum dots in a magnetic field at finite bias -- charge, spin and heat currents
• Anisotropic charge Kondo effect in a triple quantum dot
• Phonon distributions of a single bath mode coupled to a quantum dot
• Attractive Coulomb interactions in a triple quantum dot
• Pair Tunneling and shot noise through a single molecule in a strong electron-phonon coupling
• Total Current Blockade in an Ultra-Cold Dipolar Quantum Wire
• Attractive and driven interaction in quantum dots: mechanisms for geometric pumping
• Geometric energy transport and refrigeration with driven quantum dots
• Missing derivative discontinuity of the exchange-correlation energy for attractive interactions: the charge Kondo effect
• Nonequilibrium Kondo effect by equilibrium numerical renormalization group method: The hybrid Anderson model subject to a finite spin bias
• Charge-Kondo Effect in Mesoscopic Superconductors Coupled to Normal Metals
• Thermal transport of molecular junctions in the pair tunneling regime
• Role of electron-electron interaction in the Mpemba effect in quantum dots
• Bipolaronic blockade effect in quantum dots with negative charging energy
• Strongly correlated electrons in superconducting islands with fluctuating Cooper pairs
• Electromechanical instability in vibrating quantum dots with effectively negative charging energy
• Electron-electron attraction in an engineered electromechanical system
• Quantum criticality and formation of a singular Fermi liquid in the attractive SU(N > 2) Anderson model
• Fermionic duality: General symmetry of open systems with strong dissipation and memory
• Emergence of a negative charging energy in a metallic dot capacitively coupled to a superconducting island
• Quantum phase transitions in superconductor--quantum-dot--superconductor Josephson structures with attractive intradot interaction
• Electron pair current through the correlated quantum dot