Pair tunneling through single molecules

Abstract

By a polaronic energy shift, the effective charging energy of molecules can become negative, favoring ground states with even numbers of electrons. Here, we show that charge transport through such molecules near ground-state degeneracies is dominated by tunneling of electron pairs which coexists with (featureless) single-electron cotunneling. Due to the restricted phase space for pair tunneling, the current-voltage characteristics exhibits striking differences from the conventional Coulomb blockade. In asymmetric junctions, pair tunneling can be used for gate-controlled current rectification and switching.

4+ pages, 4 figures; minor changes, version published in Phys. Rev. Lett

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Cited by in corpus (61)

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• Froehlich Polaron and Bipolaron: Recent Developments
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• Franck-Condon Blockade in a Single-Molecule Transistor
• Transport in molecular states language: Generalized quantum master equation approach
• Cotunneling and non-equilibrium magnetization in magnetic molecular monolayers
• Real-time renormalization group in frequency space: A 2-loop analysis of the nonequilibrium anisotropic Kondo model at finite magnetic field
• Nonequilibrium charge-Kondo transport through negative-U molecules
• Full counting statistics and shot noise of cotunneling in quantum dots and single-molecule transistors
• Current Noise in Single-Molecule Junctions Induced by Electronic-Vibrational Coupling
• Real-time renormalization group and cutoff scales in nonequilibrium applied to an arbitrary quantum dot in the Coulomb blockade regime
• Thermoelectrics in Coulomb-coupled quantum dots: Cotunneling and energy-dependent lead couplings
• Pair-tunneling resonance in the single-electron transport regime
• Electronic Transport through Magnetic Molecules with Soft Vibrating Modes
• Crossover from adiabatic to antiadiabatic phonon-assisted tunneling in single-molecule transistors
• Current rectification by asymmetric molecules: An ab initio study
• Transport mirages in single-molecule devices
• Qubit-mediated energy transfer between thermal reservoirs: beyond Markovian Master equation
• Kondo effect and channel mixing in oscillating molecules
• Recurrent delocalization and quasi-equilibration of photons in coupled circuit QED systems
• Electron coherent and incoherent pairing instabilities in inhomogeneous bipartite and nonbipartite nanoclusters
• Spin-charge separation and simultaneous spin and charge Kondo effect
• Dissipative Two-Electron Transfer
• Electron-Phonon Correlation Effects in Molecular Transistors
• Nonequilibrium diagrammatic technique for Hubbard Green functions
• Kondo effect in quantum dots coupled to ferromagnetic leads with noncollinear magnetizations: effects due to electron-phonon coupling
• Revealing attractive electron-electron interaction in a quantum dot by full counting statistics
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• Berry-phase effects in transport through single Jahn-Teller molecules
• First Principles Quantum Transport with Electron-vibration Interactions: A Maximally Localized Wannier Function Approach
• Anisotropic charge Kondo effect in a triple quantum dot
• Pair Tunneling and shot noise through a single molecule in a strong electron-phonon coupling
• Attractive and driven interaction in quantum dots: mechanisms for geometric pumping
• Total Current Blockade in an Ultra-Cold Dipolar Quantum Wire
• Geometric energy transport and refrigeration with driven quantum dots
• Electron transport in nanoscale junctions with local anharmonic modes
• Quantum Monte Carlo results for bipolaron stability in quantum dots
• Energy Transfer and Thermoelectricity in Molecular Junctions in Non-Equilibrated Solvents
• Tunneling-induced renormalization in interacting quantum dots
• Missing derivative discontinuity of the exchange-correlation energy for attractive interactions: the charge Kondo effect
• Quantum phase transitions in a charge-coupled Bose-Fermi Anderson model
• Slave boson theory for transport through magnetic molecules with vibronic states
• Thermal transport of molecular junctions in the pair tunneling regime
• A non-equilibrium equation-of-motion approach to quantum transport utilizing projection operators
• Coulomb Blockade of a Three-terminal Quantum Dot
• Absence of Coulomb Blockade in the Anderson Impurity Model at the Symmetric Point
• Bipolaronic blockade effect in quantum dots with negative charging energy
• Bipolaron formation in 1D-3D quantum dots: A lattice quantum Monte Carlo approach
• Thermovoltage in quantum dots with attractive interaction
• Finite-bias conductance anomalies at a singlet-triplet crossing
• Tunneling of Hybridized Pairs of Electrons through a One-Dimensional Channel
• Electromechanical instability in vibrating quantum dots with effectively negative charging energy
• Quantum criticality and formation of a singular Fermi liquid in the attractive SU(N > 2) Anderson model
• Electron-electron attraction in an engineered electromechanical system
• Emergence of a negative charging energy in a metallic dot capacitively coupled to a superconducting island
• Electron pair current through the correlated quantum dot
• Cotunneling signatures of Spin-Electric coupling in frustrated triangular molecular magnets
• Evidence for atomic-scale vibron-mediated electron bunching