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相关论文: Molecular transistor coupled to phonons and Luttin…

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We study a model of two interacting levels that are attached to two electronic leads, where one of the levels is attached very weakly to the leads. We use rate equations method to calculate the average current and the noise of electrons…

介观与纳米尺度物理 · 物理学 2012-02-02 Assaf Carmi , Yuval Oreg

We calculate the conductance through strongly correlated T-shaped molecular or quantum dot systems under the influence of phonons. The system is modelled by the extended Anderson-Holstein Hamiltonian. The finite-U mean-field slave boson…

介观与纳米尺度物理 · 物理学 2021-12-22 P. Florków , S. Lipiński

Existing Quantum Monte Carlo studies have investigated the properties of fermions on a Lieb (CuO$_2$) lattice interacting with an on-site, or near-neighbor electron-electron coupling. Attention has focused on the interplay of such…

强关联电子 · 物理学 2021-01-08 Chunhan Feng , Richard T. Scalettar

In this paper, we present theoretical investigation of the zero-frequency shot noise spectra in electron tunneling through an interacting quantum dot connected to two ferromagnetic leads with possibility of spin-flip scattering between the…

介观与纳米尺度物理 · 物理学 2009-11-10 Ivana Djuric , Bing Dong , H. L. Cui

We analyze the transport properties of a quantum dot with a harmonic degree of freedom (Holstein phonon) coupled to interacting one-dimensional metallic leads. Using Tomonaga-Luttinger model to describe the interacting leads we construct…

介观与纳米尺度物理 · 物理学 2015-03-17 S. Maier , A. Komnik

Addressing the feasibility of quantum communication with entangled electrons in an interacting many-body environment, we propose an interference experiment using a scattering set-up with an entangler and a beam splitter. It is shown that,…

介观与纳米尺度物理 · 物理学 2009-10-31 Guido Burkard , Daniel Loss , Eugene V. Sukhorukov

We investigate two equivalent capacitively and tunnel coupled quantum dots, each coupled to its own pair of leads. Local Holstein type electron-phonon coupling at the dots is assumed. To study many-body effects we use the finite-U…

介观与纳米尺度物理 · 物理学 2023-11-20 D. Krychowski , S. Lipiński

We study frequency-dependent current noise through a single-level quantum dot connected to ferromagnetic leads with non-collinear magnetization. We propose to use the frequency-dependent Fano factor as a tool to detect single-spin dynamics…

介观与纳米尺度物理 · 物理学 2009-11-11 Matthias Braun , Jürgen König , Jan Martinek

Using the Keldysh nonequilibrium technique we calculate current, noise and Fano factor in a ferromagnetic(FM)-quantum dot-ferromagnetic(FM) system with Coulomb interaction and spin-flip scattering in the dot. The lead polarizations are…

凝聚态物理 · 物理学 2007-05-23 F. M. Souza , J. C. Egues , A. P. Jauho

We investigate the effect of electron-phonon inelastic scattering on shot noise in nanoscale junctions in the regime of quasi-ballistic transport. We predict that when the local temperature of the junction is larger than its lowest…

介观与纳米尺度物理 · 物理学 2016-08-31 Yu-Chang Chen , Massimiliano Di Ventra

Effects of resonant acoustic phonon scattering on magnetoresistivity are examined in two-dimensional electron systems at low temperatures by using a balance-equation magnetotransport scheme direct controlled by the current. The…

介观与纳米尺度物理 · 物理学 2008-05-13 X. L. Lei

Electron-phonon interactions play a key role in many branches of solid-state physics. Here, our focus is on the transport properties of one-dimensional systems, and we apply efficient real-time matrix-product state methods to compute the…

强关联电子 · 物理学 2023-08-21 David Jansen , Fabian Heidrich-Meisner

The current noise of a voltage biased interacting quantum wire adiabatically connected to metallic leads is computed in presence of an impurity in the wire. We find that in the weak backscattering limit the Fano factor characterizing the…

强关联电子 · 物理学 2009-11-10 B. Trauzettel , I. Safi , F. Dolcini , H. Grabert

We derive the exact reduced density matrix for the electrons in an analytically solvable electron-phonon model. Here, the electrons are described as a Luttinger liquid that is coupled to Einstein phonons. We further derive analytical…

强关联电子 · 物理学 2022-11-23 Gergő Roósz , Karsten Held

The topic of this review is the effects of electron-phonon interaction (EPI) on the transport properties of molecular nano-conductors. A nano-conductor connects to two electron leads and two phonon leads, possibly at different temperatures…

介观与纳米尺度物理 · 物理学 2015-04-07 Jing-Tao Lü , Hangbo Zhou , Jin-Wu Jiang , Jian-Sheng Wang

The conductance through a molecular device including electron-electron and electron-phonon interactions is calculated using the Numerical Renormalization Group method. At low temperatures and weak electron-phonon coupling the properties of…

强关联电子 · 物理学 2007-05-23 P. S. Cornaglia , H. Ness , D. R. Grempel

Spin-polarized transport through a quantum dot strongly coupled to ferromagnetic electrodes with non-collinear magnetic moments is analyzed theoretically in terms of the non-equilibrium Green function formalism. Electrons in the dot are…

介观与纳米尺度物理 · 物理学 2009-11-13 R. Swirkowicz , M. Wilczynski , J. Barnas

A general master equation is derived to describe an electromechanical single-dot transistor in the Coulomb blockade regime. In the equation, Fermi distribution functions in the two leads are taken into account, which allows one to study the…

介观与纳米尺度物理 · 物理学 2015-06-03 Wenxi Lai , Yunshan Cao , Zhongshui Ma

A strong electron-phonon interaction arises from the modulation of the superexchange interaction by phonons. As is studied in Phys. Rev. B 70, 184514 (2004), Cu-O bond stretching modes can be soft around (pm pi/a, 0) and (0, pm pi/a), with…

超导电性 · 物理学 2015-06-25 Fusayoshi J. Ohkawa

We study nonlinear transport and non-equilibrium current noise in quasi-classical point contacts (PCs) defined in a low-density high-quality two-dimensional electron system in GaAs. At not too high bias voltages $V$ across the PC the noise…

介观与纳米尺度物理 · 物理学 2014-10-21 E. S. Tikhonov , M. Yu. Melnikov , D. V. Shovkun , L. Sorba , G. Biasiol , V. S. Khrapai