Shot noise in tunneling transport through molecules and quantum dots

Abstract

We consider electrical transport through single molecules coupled to metal electrodes via tunneling barriers. Approximating the molecule by the Anderson impurity model as the simplest model which includes Coulomb charging effects, we extend the ``orthodox'' theory to expand current and shot noise systematically order by order in the tunnel couplings. In particular, we show that a combined measurement of current and shot noise reveals detailed information of the system even in the weak-coupling limit, such as the ratio of the tunnel-coupling strengths of the molecule to the left and right electrode, and the presence of the Coulomb charging energy. Our analysis holds for single-level quantum dots as well.

8 pages

Cited by in corpus (35)

• Tunneling through molecules and quantum dots: master-equation approaches
• Full counting statistics of super-Poissonian shot noise in multi-level quantum dots
• Co-tunneling current and shot noise in quantum dots
• Quantum Dot as a Spin--Current Diode
• Inelastic tunneling effects on noise properties of molecular junctions
• Spin effects in single electron tunneling
• Super-poissonian noise, negative differential conductance, and relaxation effects in transport through molecules, quantum dots and nanotubes
• Spin-polarized current and shot noise in the presence of spin flip in a quantum dot via nonequilibrium Green's functions
• Spin effects in transport through single-molecule magnets in the sequential and cotunneling regimes
• Effects of different geometries on the conductance, shot noise and tunnel magnetoresistance of double quantum dots
• Shot noise in transport through "double quantum dots"
• Calculation of the current noise spectrum in mesoscopic transport: an efficient quantum master equation approach
• Coherent laser control of the current through molecular junctions
• Transport through quantum-dot spin valves containing magnetic impurities
• Full Counting Statistics of Interacting Electrons
• Full counting statistics and shot noise of cotunneling in quantum dots and single-molecule transistors
• Shot noise in tunneling through a single quantum dot
• Spin Diode Behavior in Transport Through Single-Molecule Magnets
• 1/f Tunnel Current Noise through Si-bound Alkyl Monolayers
• 1/f Tunnel Current Noise through Si-bound Alkyl Monolayers
• Theory of shot noise in single-walled metallic carbon nanotubes weakly coupled to nonmagnetic and ferromagnetic leads
• Fano stability diagram of a symmetric triple quantum dot
• Real-time diagrammatic approach to current-induced forces: Application to quantum-dot based nanomotors
• Finite-frequency noise in a quantum dot with normal and superconducting leads
• Current and Shot Noise Measurements in a Carbon Nanotube-Based Spin Diode
• Fractional Josephson effect versus fractional charge in superconducting-normal metal hybrid circuits
• Shot noise and tunnel magnetoresistance in multilevel quantum dots: Effects of cotunneling
• Superpoissonian shot noise in organic magnetic tunnel junctions
• Self-consistent electron counting statistics
• Dark channels in resonant tunneling transport through artificial atoms
• Current noise in quantum dot thermoelectric engines
• Dissipative dynamics of a quantum two-state system in presence of nonequilibrium quantum noise
• Effect of uniaxial magnetic anisotropy on charge transport in a junction with a precessing anisotropic molecular spin
• Dissipative tunneling in structures with quantum dots and quantum molecules
• Noise signatures of a charged Sachdev-Ye-Kitaev dot in mesoscopic transport