Correlated time-dependent transport through a two-dimensional quantum structure

@article{Gudmundsson2010CorrelatedTT,
  title={Correlated time-dependent transport through a two-dimensional quantum structure},
  author={Vidar Gudmundsson and Chi‐Shung Tang and O. Jonasson and Valeriu Moldoveanu and Andrei Manolescu},
  journal={Physical Review B},
  year={2010},
  volume={81},
  pages={205319}
}
We use a generalized master equation (GME) to describe the nonequilibrium magnetotransport of interacting electrons through a broad finite quantum wire with an embedded ring structure. The finite quantum wire is weakly coupled to two broad leads acting as reservoirs of electrons. The mutual Coulomb interaction of the electrons is described using a configuration interaction method for the many-electron states of the central system. We report some non-trivial interaction effects both at the level… 

Turnstile pumping through an open quantum wire

We use a non-Markovian generalized master equation (GME) to describe the time-dependent charge transfer through a parabolically confined quantum wire of a finite length coupled to semi-infinite

Time-dependent transport through a double quantum wire in a magnetic field

We introduce a microscopic theory and a simulation method for time-dependent quantum transport through a finite size sample with interacting electrons connected to leads with non-interacting

Coherent transient transport of interacting electrons through a quantum waveguide switch

Even though the Coulomb interaction can lift two-electron states out of the group of active transport states the length of the coupling window can be tuned to locate two very distinct transport modes in the system in the late transient regime before the onset of a steady state.

Stepwise introduction of model complexity in a generalized master equation approach to time‐dependent transport

We demonstrate that with a stepwise introduction of complexity to a model of an electron system embedded in a photonic cavity and a carefully controlled stepwise truncation of the ensuing many‐body

The Mathematical Description of Steady-State Solutions for an Open Quantum System

The theory of open quantum systems strives to explain the behaviour of many-body systems obeying the laws of quantum mechanics, which are in some way controlled by the effects of their environment.

The influence of cavity photons on the transient transport of correlated electrons through a quantum ring with magnetic field and spin-orbit interaction

We investigate time-dependent transport of Coulomb and spin-orbit interacting electrons through a finite-width quantum ring of realistic geometry under nonequilibrium conditions using a

References

SHOWING 1-10 OF 19 REFERENCES

Time-dependent transport via the generalized master equation through a finite quantum wire with an embedded subsystem

In this paper, we apply the generalized master equation to analyze time-dependent transport through a finite quantum wire with an embedded subsystem. The parabolic quantum wire and the leads with

Kadanoff-Baym approach to quantum transport through interacting nanoscale systems: From the transient to the steady-state regime

We propose a time-dependent many-body approach to study the short-time dynamics of correlated electrons in quantum transport through nanoscale systems contacted to metallic leads. This approach is

Quantum master equation for electron transport through quantum dots and single molecules

A quantum master equation QME is derived for the many-body density matrix of an open current-carrying system weakly-coupled to two metal leads. The dynamics and the steady-state properties of the

Coulomb interaction and transient charging of excited states in open nanosystems

We obtain and analyze the effect of electron-electron Coulomb interaction on the time-dependent current flowing through a mesoscopic system connected to biased semi-infinite leads. We assume the

Geometrical effects and signal delay in time-dependent transport at the nanoscale

Nonstationary and steady-state transport through a mesoscopic sample connected to particle reservoirs via time-dependent barriers is investigated by the reduced density operator method. The

Coherent control of the spin current through a quantum dot

Within the weak-coupling regime the spin current through a quantum dot system is calculated using a quantum master equation approach which includes a sum over Matsubara terms. To be able to

Time-dependent magnetotransport of a wave packet in a quantum wire with embedded quantum dots

We consider wave packet propagation in a quantum wire with either an embedded antidot or an embedded parallel double open quantum dot under the influence of a uniform magnetic field. The

Interference effects in the counting statistics of electron transfers through a double quantum dot

We investigate effects of quantum interferences and Coulomb interaction on the counting statistics of electrons crossing a double quantum dot in a parallel geometry by using a generating function

Aharonov-Bohm electron interferometer in the integer quantum Hall regime

We report experiments on a quantum electron interferometer fabricated from high mobility, low density AlGaAs/GaAs heterostructure material. In this device, a nearly circular electron island is

Interacting electrons in the Aharonov-Bohm interferometer

We present a microscopic picture of quantum transport in the Aharonov-Bohm AB interferometer taking into account the electron interaction within the Hartree and the spin density-functional theory