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We develop the general non-equilibrium theory of transport through a quantum dot, including Coulomb Blockade effects via a 1/N expansion, where N is the number of scattering channels. At lowest order we recover the Landauer formula for the…

介观与纳米尺度物理 · 物理学 2009-11-10 Piet W. Brouwer , Austen Lamacraft , Karsten Flensberg

We review the quantum interference effects in a system of interacting electrons confined to a quantum dot. The review starts with a description of an isolated quantum dot. We discuss the status of the Random Matrix theory (RMT) of the…

介观与纳米尺度物理 · 物理学 2009-11-07 I. L. Aleiner , P. W. Brouwer , L. I. Glazman

The rate-equation approach is used to describe sequential tunneling through a molecular junction in the Coulomb blockade regime. Such device is composed of molecular quantum dot (with discrete energy levels) coupled with two metallic…

介观与纳米尺度物理 · 物理学 2009-11-11 Kamil Walczak

We investigate theorerically the non-equilibrium transport through a molecular quantum dot as a function of gate and bias voltage, taking into account the typical situation in molecular electronics. In this respect, our study includes…

介观与纳米尺度物理 · 物理学 2015-08-03 A. A. Aligia , P. Roura Bas , S. Florens

We theoretically study the nonequilibrium thermoelectric transport properties of a strongly-correlated molecule (or quantum dot) embedded in a tunnel junction. Assuming that the coupling of the molecule to the contacts is asymmetric, we…

介观与纳米尺度物理 · 物理学 2023-02-22 Anand Manaparambil , Ireneusz Weymann

We investigate non-equilibrium transport properties of a quantum dot in the Coulomb blockade regime under the condition of negligible inelastic scattering during the dwelling time of the electrons in the dot. Using the quantum kinetic…

介观与纳米尺度物理 · 物理学 2023-11-17 George McArdle , Rose Davies , Igor V. Lerner , Igor V. Yurkevich

We study transport through a strongly correlated quantum dot and show that Coulomb blockade can appear even in the presence of perfect contacts. This conclusion arises from numerical calculations of the conductance for a microscopic model…

强关联电子 · 物理学 2007-05-23 Gabriel Vasseur , Dietmar Weinmann , Rodolfo A. Jalabert

We develop a theory of the conductance of a quantum dot connected to two leads by single-mode quantum point contacts. If the contacts are in the regime of perfect transmission, the conductance shows no Coulomb blockade oscillations as a…

凝聚态物理 · 物理学 2009-10-28 A. Furusaki , K. A. Matveev

We study theoretically a quantum dot in the quantum Hall regime that is strongly coupled to a single lead via a point contact. We find that even when the transmission through the point contact is perfect, important features of the Coulomb…

凝聚态物理 · 物理学 2009-10-28 Hangmo Yi , C. L. Kane

A non-equilibrium theory describing the charge qubit dynamics measured by a quantum point contact is developed based on Schwinger-Keldysh's approach. Using the real-time diagram technique, we derive the master equation to all orders in…

介观与纳米尺度物理 · 物理学 2009-11-13 Ming-Tsung Lee , Wei-Min Zhang

Inelastic effects in the Coulomb blockade and Kondo regimes of electron transport through molecular junctions are considered within a simple nonequilibrium equation-of-motion (EOM) approach. The scheme is self-consistent, and can…

介观与纳米尺度物理 · 物理学 2007-07-02 Michael Galperin , Abraham Nitzan , Mark A. Ratner

We study conductance through a quantum dot under Coulomb blockade conditions in the presence of an external periodic perturbation. The stationary state is determined by the balance between the heating of the dot electrons by the…

介观与纳米尺度物理 · 物理学 2015-06-24 D. M. Basko , V. E. Kravtsov

We present a detailed theoretical investigation of the effect of Coulomb interactions on electron transport through quantum dots and double barrier structures connected to a voltage source via an arbitrary linear impedance. Combining real…

介观与纳米尺度物理 · 物理学 2013-05-29 Dmitri S. Golubev , Andrei D. Zaikin

We investigated the peculiarities of non-equilibrium charge configurations in the system of two strongly coupled quantum dots (QDs) weakly connected to the reservoirs in the presence of Coulomb correlations. We revealed that total electron…

介观与纳米尺度物理 · 物理学 2014-09-23 V. N. Mantsevich , N. S. Maslova , P. I. Arseyev

In the present work, we theoretically study the nonlinear regime of charge transport through a quantum dot coupled to the source and drain reservoirs. The investigation is carried out using a nonequilibrium Green's functions formalism…

介观与纳米尺度物理 · 物理学 2015-12-01 Natalya A. Zimbovskaya

We determine the zero-bias anomaly of the conductance of tunnel junctions by an approach unifying the conventional Coulomb blockade theory for ultrasmall junctions with the diffusive anomalies in disordered conductors. Both,…

介观与纳米尺度物理 · 物理学 2009-11-07 Joerg Rollbuehler , Hermann Grabert

We present a theory of Coulomb blockade oscillations in tunneling through a pair of quantum dots connected by a tunable tunneling junction. The positions and amplitudes of peaks in the linear conductance are directly related, respectively,…

凝聚态物理 · 物理学 2009-10-28 K. A. Matveev , L. I. Glazman , H. U. Baranger

We present a comprehensive set of numerically exact results for the Anderson model of a quantum dot coupled to two electrodes in non-equilibrium regime. We use a high order perturbative expansion in power of the interaction $U$, coupled to…

Quantum transport through single molecules is very sensitive to the strength of the molecule-electrode contact. Here, we investigate the behavior of a model molecular junction weakly coupled to external electrodes in the case where charging…

介观与纳米尺度物理 · 物理学 2009-11-11 Bo Song , Dmitry A. Ryndyk , Gianaurelio Cuniberti

Quantum transport through single molecules is very sensitive to the strength of the molecule-electrode contact. When a molecular junction weakly coupled to external electrodes, charging effects do play an important role (Coulomb blockade…

介观与纳米尺度物理 · 物理学 2007-10-03 Bo Song
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