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Conduction of electrons in matter is ultimately described by quantum mechanics. Yet at low frequency or long time scales, low temperature quantum transport is perfectly described by this very simple idea: electrons are emitted by the…

介观与纳米尺度物理 · 物理学 2015-06-17 Karl Thibault , Julien Gabelli , Christian Lupien , Bertrand Reulet

We study subgap transport through an interacting quantum dot tunnel coupled to one normal and two superconducting leads. To check the reliability of an approximation of an infinitely-large gap $\Delta$ in the superconducting leads and weak…

介观与纳米尺度物理 · 物理学 2013-01-21 David Futterer , Jacek Swiebodzinski , Michele Governale , Jürgen König

The nonlinear conductance observed in a quantum point contact is theoretically reproduced for the entire range of applied bias. The single-impurity Anderson model with two reservoirs at different chemical potentials is studied for a…

介观与纳米尺度物理 · 物理学 2013-01-25 Jongbae Hong

We investigate the dynamical interplay between currents and electromagnetic fields in frequency-dependent transport through a single-channel quantum wire with an impurity potential in the presence of electron-electron interactions. We…

介观与纳米尺度物理 · 物理学 2007-05-23 Andrea Fechner , Gianaurelio Cuniberti , Maura Sassetti , Bernhard Kramer

We give a detailed presentation of our recent scheme to include correlation effects in molecular transport calculations using the GW approximation within the non-equilibrium Keldysh formalism. We restrict the GW self-energy to the central…

材料科学 · 物理学 2009-11-13 Kristian S. Thygesen , Angel Rubio

We describe microscopic theory for the quantum transport through finite interacting systems connected to noninteracting leads. It can be applied to small systems such as quantum dots, quantum wires, atomic chain, molecule, and so forth. The…

介观与纳米尺度物理 · 物理学 2007-05-23 Akira Oguri

Recent progress in manipulating atomic and condensed matter systems has instigated a surge of interest in non-equilibrium physics, including many-body dynamics of trapped ultracold atoms and ions, near-field radiative heat transfer, and…

量子物理 · 物理学 2016-09-05 F. Intravaia , R. O. Behunin , C. Henkel , K. Busch , D. A. R. Dalvit

We present an analysis of the transient electronic and transport properties of a nanojunction in the presence of electron-electron and electron-phonon interactions. We introduce a novel numerical approach which allows for an efficient…

介观与纳米尺度物理 · 物理学 2018-09-13 R. Seoane Souto , R. Avriller , A. Levy Yeyati , A. Martín-Rodero

Electron transport properties of few-electron open quantum dots within the spin-restricted Hartree-Fock approximation are studied. The self-consistent numerical calculations were performed for a whole device, including the semi-infinite…

介观与纳米尺度物理 · 物理学 2015-05-27 S. Ihnatsenka

We consider the problem of a semiclassical description of quantum chaotic transport, when a tunnel barrier is present in one of the leads. Using a semiclassical approach formulated in terms of a matrix model, we obtain transport moments as…

混沌动力学 · 物理学 2022-07-06 Pedro H. S. Bento , Marcel Novaes

We study the steady-state current in a minimal model for a quantum dot dominated by charge fluctuations and analytically describe the time evolution into this state. The current is driven by a finite bias voltage V across the dot, and two…

介观与纳米尺度物理 · 物理学 2010-07-08 C. Karrasch , S. Andergassen , M. Pletyukhov , D. Schuricht , L. Borda , V. Meden , H. Schoeller

Quantum devices featuring mid-circuit measurement and reset capabilities, such as quantum computers and dual-species Rydberg quantum simulators, enable the realization of quantum cellular automata. These systems evolve in discrete time…

量子物理 · 物理学 2026-04-01 Uddhav Sen , Federico Carollo , Sascha Wald

Electron transport experiments on two lateral quantum dots coupled in series are reviewed. An introduction to the charge stability diagram is given in terms of the electrochemical potentials of both dots. Resonant tunneling experiments show…

介观与纳米尺度物理 · 物理学 2009-11-07 W. G. van der Wiel , S. De Franceschi , J. M. Elzerman , T. Fujisawa , S. Tarucha , L. P. Kouwenhoven

We investigate the origin of asymmetry in various measured current-voltage (I-V) characteristics of molecules with no inherent spatial asymmetry, with particular focus on a recent break junction measurement. We argue that such asymmetry…

介观与纳米尺度物理 · 物理学 2009-11-10 F. Zahid , A. W. Ghosh , M. Paulsson , E. Polizzi , S. Datta

Any interface boundary in an equilibrium system of Coulomb particles is accompanied by the existence of a finite difference in the average electrostatic potential through this boundary. The discussed interface potential drop is a…

等离子体物理 · 物理学 2009-01-19 Igor Iosilevskiy , Alexander Chigvintsev

We investigate the entanglement and the R\'enyi entropies of two electronic leads connected by a quantum point contact. For non-interacting electrons, the entropies can be related to the cumulants of the full counting statistics of…

介观与纳米尺度物理 · 物理学 2015-03-12 Konrad H. Thomas , Christian Flindt

We study a model proposed recently in which a small quantum dot is coupled symmetrically to several large quantum dots characterized by a charging energy E_c. Even if E_c is much smaller than the Kondo temperature T_K, the long-ranged…

强关联电子 · 物理学 2009-11-10 S. Florens , A. Rosch

We apply the non-equilibrium functional renormalization group approach treating flow of the electronic self-energies, to describe local magnetic moments formation and electronic transport in a quadruple quantum dot (QQD) ring, coupled to…

强关联电子 · 物理学 2019-04-17 V. S. Protsenko , A. A. Katanin

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 calculate the counting statistics of electron transfer through an open quantum dot with charging interaction. A dot that is connected to leads by two single-channel quantum point contacts in an in-plane magnetic field is described by a…

介观与纳米尺度物理 · 物理学 2009-11-10 Markus Kindermann , Bjoern Trauzettel
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