Modeling of cotunneling in quantum dot systems
arXiv:0904.3249 · doi:10.1016/j.physe.2009.06.069
Abstract
Transport through nanosystems is treated within the second order von Neumann approach. This approach bridges the gap between rate equations which neglect level broadening and cotunneling, and the transmission formalism, which is essentially based on the single-particle picture thereby treating many-particle interactions on an approximate level. Here we provide an alternative presentation of the method in order to clarify the underlying structure. Furthermore we apply it to the problem of cotunneling. It is shown that both elastic and inelastic cotunneling can be described quantitatively, while the transmission approach with a mean-field treatment of the interaction provides an artificial bistability.
7 pages, 3 Figures included, final version with journal information
References in corpus (11)
- Exact dynamics of dissipative electronic systems and quantum transport: Hierarchical equations of motion approach
- Quantum master equation for electron transport through quantum dots and single molecules
- Counting Statistics of Non-Markovian Quantum Stochastic Processes
- Tunneling through molecules and quantum dots: master-equation approaches
- Full Counting Statistics in Strongly Interacting Systems: Non-Markovian Effects
- Tunneling through nanosystems: Combining broadening with many-particle states
- Coherent Transport through an interacting double quantum dot: Beyond sequential tunneling
- Decoherence due to contacts in ballistic nanostructures
- Energy gaps and interaction blockade in confined quantum systems
- Interplay between interference and Coulomb interaction in the ferromagnetic Anderson model with applied magnetic field
- Failure of mean-field approach in out-of-equilibrium Anderson model
Cited by in corpus (18)
- Density-operator approaches to transport through interacting quantum dots: Simplifications in fourth-order perturbation theory
- Correlation-induced conductance suppression at level degeneracy in a quantum dot
- Time-dependent Landauer-Büttiker formula: application to transient dynamics in graphene nanoribbons
- QmeQ 1.0: An open-source Python package for calculations of transport through quantum dot devices
- Time-dependent transport in open systems based on quantum master equations
- A diagrammatic description of the equations of motion, current, and noise within the second-order von Neumann approach
- Canyon of Current Suppression in an interacting two-level Quantum Dot
- Total Current Blockade in an Ultra-Cold Dipolar Quantum Wire
- Time-dependent quantum transport through an interacting quantum dot beyond sequential tunneling: second-order quantum rate equations
- On the cotunneling regime of interacting quantum dots
- Contrasting exchange-field and spin-transfer torque driving mechanisms in all-electric electron spin resonance
- Noise calculations within the second-order von Neumann approach
- Thermal transport controlled by intra- and inter-dot Coulomb interactions in sequential and cotunneling serially-coupled double quantum dots
- Thermal transport driven by Coulomb interactions in quantum dots: Enhancement of thermoelectric and heat currents
- Thermopower signatures and spectroscopy of the canyon of conductance suppression
- Quantifying the impact of phonon scattering on electrical and thermal transport in quantum dots
- Controlling thermoelectric, heat, and energy currents through a quantum dot in sequential and cotunneling Coulomb-blockade regimes
- Theory of Electron Spin Resonance Scanning Tunneling Microscopy: The First Decade