Quantum transport through single-molecule junctions with orbital degeneracies

Abstract

We consider electronic transport through a single-molecule junction where the molecule has a degenerate spectrum. Unlike previous transport models, and theories a rate-equations description is no longer possible, and the quantum coherences between degenerate states have to be taken into account. We present the derivation and application of a master equation that describes the system in the weak-coupling limit and give an in-depth discussion of the parameter regimes and the new phenomena due to coherent on-site dynamics.

References in corpus (13)

• Franck-Condon blockade and giant Fano factors in transport through single molecules
• Franck-Condon blockade in suspended carbon nanotube quantum dots
• Vibrational sidebands and dissipative tunneling in molecular transistors
• Tunneling in suspended carbon nanotubes assisted by longitudinal phonons
• Tunneling through molecules and quantum dots: master-equation approaches
• Current-induced nonequilibrium vibrations in single-molecule devices
• Rate equations for Coulomb blockade with ferromagnetic leads
• A benzene interference single-electron transistor
• Pumping of vibrational excitations in a Coulomb blockaded suspended carbon nanotube
• Symmetry fingerprints of a benzene single-electron transistor
• Sequential Tunneling through Molecular Spin Rings
• Transport signature of pseudo-Jahn-Teller dynamics in a single-molecule transistor
• Berry-phase effects in transport through single Jahn-Teller molecules

Cited by in corpus (18)

• Density-operator approaches to transport through interacting quantum dots: Simplifications in fourth-order perturbation theory
• Quantum Interference and Decoherence in Single-Molecule Junctions: How Vibrations Induce Electrical Current
• Vibrationally Induced Decoherence in Single-Molecule Junctions
• Image charge effects in single-molecule junctions: Breaking of symmetries and negative differential resistance in a benzene transistor
• Quantum Thermodynamics with Degenerate Eigenstate Coherences
• Coherent properties of nano-electromechanical systems
• Spin resonance without spin splitting
• Spiro-Conjugated Molecular Junctions: between Jahn-Teller Distortion and Destructive Quantum Interference
• Duality for open fermion systems: energy-dependent weak coupling and quantum master equations
• Dynamical symmetry breaking in vibration-assisted transport through nanostructures
• Charge-vibration interaction effects in normal-superconductor quantum dots
• Qubit quantum-dot sensors: noise cancellation by coherent backaction, initial slips, and elliptical precession
• Coarse-graining master equation for periodically driven systems
• Pseudospin resonances reveal synthetic spin-orbit interaction
• Finite frequency current noise in the Holstein model
• Spectrum and Franck-Condon factors of interacting suspended single-wall carbon nanotubes
• Vibration induced memory effects and switching in ac-driven molecular nanojunctions
• Interference and shot noise in a degenerate Anderson-Holstein model