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Article
Open AccessQuantum interference effects in multi-channel correlated tunneling structures
In multi-channel tunneling systems quantum interference effects modify tunneling conductance spectra due to Fano effect. We investigated the impact of Hubbard type Coulomb interaction on tunneling conductance ...
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Article
Non-Stationary Spin-Polarized Tunneling through a Quantum Dot Coupled to Noncollinearly Polarized Ferromagnetic Leads
Non-stationary spin-dependent transport through the interacting single-level quantum dot coupled to ferromagnetic leads with non-collinear magnetizations has been analyzed theoretically. The non-stationary tra...
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Article
Open AccessTunneling current and noise of entangled electrons in correlated double quantum dot
We developed general approach for the analysis of tunneling current and its zero frequency noise for a wide class of systems where electron transport occurs through the intermediate structure with localized el...
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Article
Open AccessCorrelated impurity complex in the asymmetric tunneling contact: an ideal system to observe negative tunneling conductivity
We studied theoretically electron transport through the impurity complex localized between the tunneling contact leads by means of the generalized Keldysh diagram technique. The formation of multiple well pron...
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Article
Open AccessProbing and driving of spin and charge states in double quantum dot under the quench
We have analyzed theoretically quenched dynamics of correlated double quantum dot (DQD) due to the switching “on” and “off” coupling to reservoirs. The possibility for controllable manipulation of charge and s...
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Article
Non-Stationary Spin-Polarized Currents Tuning in a Correlated Quantum Dot
We analyzed the influence of applied bias changing and external magnetic field switching on the non-stationary spin-polarized currents behavior in the correlated single-level quantum dot coupled to the non-mag...
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Article
Kinetics of a local “magnetic” moment and a non-stationary spin-polarized current in the single impurity Anderson model
We perform theoretical investigation of the localized state dynamics in the presence of interaction with the reservoir and Coulomb correlations. We analyze kinetic equations for electron occupation numbers wit...
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Article
Diagnostics of many-particle electronic states: Non-stationary currents and residual charge dynamics
We propose the method for identifying many particle electronic states in the system of coupled quantum dots (impurities) with Coulomb correlations. We demonstrate that different electronic states can be distin...
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Article
Tunneling current noise spectra of biased impurity with a phonon mode
We report the results of theoretical investigations of the tunneling current noise spectra through a single-level impurity both in the presence and in the absence of electron–phonon interaction based on the no...
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Article
Spatial-symmetry-induced dark states and charge trap** effects in the coupled quantum dots
In a system of N interacting single-level quantum dots (QDs), we study the relaxation dynamics and the current–voltage characteristics determined by symmetry properties of the QD arrangement. Different numbers of...
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Article
Nonequilibrium diagram technique for tunneling problems in the effective mass approach
It is shown how the general formulas of the nonequilibrium diagram technique can be used in problems of tunnel planar structures described in the effective mass approach. The relation between such a “continual...
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Article
Effect of coulomb correlations on the two-level quantum dot susceptibility and polarization
We revealed that the susceptibility and polarization of two-level quantum dot (QD) with Coulomb correlations between localized electrons weakly connected to the reservoirs are determined not only by the statio...
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Article
Investigation of local tunneling current noise spectra on the silicon crystal surfaces by means of STM/STS
We report on a careful analysis of the local tunneling conductivity by means of ultra-high vacuum scanning tunneling microscopy/spectroscopy (STM/STS) technique in the vicinity of low-dimensional structures on...
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Article
Many-particle interaction in tunneling spectroscopy of Ge adatoms on the Ge(111) surface
We report on the direct observation by means of low temperature scanning tunneling microscopy and spectroscopy (STM/STS) of additional peculiarities in the local tunneling conductivity caused by the presence o...
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Article
On the density of states for the Hubbard model: Pseudo-particle Keldysh diagram method—an alternative to DMFT?
It is shown how to construct Keldysh diagram technique for pseudo-particle approach to the Hubbard model. We propose self-consistent equations for pseudo particle and electron Green’s functions in Keldysh diag...
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Article
External field induced switching of a tunneling current in coupled quantum dots
We investigated the tunneling current peculiarities in the system of two quantum dots that are coupled by means of the external field and are weakly connected to the electrodes in the presence of Coulomb corre...
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Article
Nonstationary effects in the system of coupled quantum dots influenced by Coulomb correlations
We investigate the time evolution of filling numbers of localized electrons in the system of two coupled single-level quantum dots (QDs) connected with the continuous-spectrum states in the presence of Coulomb...
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Article
Non-stationary effects in the coupled quantum dots influenced by the electron-phonon interaction
We analyzed time evolution of the localized charge in the system of two interacting single level quantum dots coupled with the continuous spectrum states in the presence of electron-phonon interaction. We demo...
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Article
Charge and spin configurations in the coupled quantum dots with Coulomb correlations induced by tunneling current
We investigated the peculiarities of non-equilibrium charge states and spin configurations in the system of two strongly coupled quantum dots (QDs) weakly connected to the electrodes in the presence of Coulomb...
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Article
Coulomb correlations effects on localized charge relaxation in the coupled quantum dots
We analyzed localized charge time evolution in the system of two interacting quantum dots (QD) (artificial molecule) coupled with the continuous spectrum states. We demonstrated that Coulomb interaction modifi...
