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相关论文: Phonon-assisted resonant tunneling through a tripl…

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Based on exactly mapping of a many-body electron-phonon interaction problem onto a one-body problem, we apply the well-established nonequilibrium Green function technique to solve the time-dependent phonon-assisted tunneling at low…

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

We present a theoretical study of current noise of a resonant tunnel junction coupled to a nanomechanical oscillator within the non-equilibrium Green's function technique. An arbitrary voltage is applied to the tunnel junction and electrons…

介观与纳米尺度物理 · 物理学 2010-05-21 M. Tahir , A. MacKinnon

Electron transport through a double quantum dot system is studied with taking into account electron-phonon interaction. The Keldysh nonequilibrium Green function formalism is used to compute the current and transmission coefficient of the…

介观与纳米尺度物理 · 物理学 2012-04-11 M. Bagheri Tagani , H. Rahimpour Soleimani

Within a phonon-assisted resonance level model we develop a self-consistent procedure for calculating electron transport currents in molecular junctions with intermediate to strong electron-phonon interaction. The scheme takes into account…

介观与纳米尺度物理 · 物理学 2007-05-23 Michael Galperin , Abraham Nitzan , Mark A. Ratner

Using the Keldysh nonequilibrium Green function technique, we study the current and shot noise spectroscopy of a single molecular quantum dot coupled to a local phonon mode. It is found that in the presence of electron-phonon coupling, in…

介观与纳米尺度物理 · 物理学 2009-11-07 Jian-Xin Zhu , A. V. Balatsky

We study inelastic electron tunneling through a molecular junction using the non-equilibrium Green function (NEGF) formalism. The effect of the mutual influence between the phonon and the electron subsystems on the electron tunneling…

介观与纳米尺度物理 · 物理学 2009-11-10 Michael Galperin , Mark A. Ratner , Abraham Nitzan

We investigate the effects of phonon scattering on the electronic current noise through nanojunctions using the non-equilibrium Green's functions formalism extended to include the counting field. In the case of weak electron-phonon coupling…

介观与纳米尺度物理 · 物理学 2009-09-28 Federica Haupt , Tomas Novotny , Wolfgang Belzig

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

The Hamiltonian of electrons interacting with interface phonons in three-barrier resonant tunneling structure is established using the first principles within the models of effective mass and polarization continuum. Using the Green's…

介观与纳米尺度物理 · 物理学 2014-07-10 M. V. Tkach , Ju. O. Seti , Y. B. Grynyshyn , O. M. Voitsekhivska

The expression for additional subgap current in the presence of electron-phonon interaction is derived. We show that the phonon assisted tunneling leads to appearance of peaks on current-voltage characteristics at the Josephson frequencies…

超导电性 · 物理学 2009-10-31 E. G. Maksimov , P. I. Arseyev , N. S. Maslova

We observe a series of sharp resonant features in the tunnelling differential conductance of InAs quantum dots. We found that dissipative quantum tunnelling has a strong influence on the operation of nano-devices. Because of such tunnelling…

In this paper we investigate the spin-current and its shot-noise spectrum in a single-molecule quantum dot coupled with a local phonon mode. We pay special attention on the effect of phonon on the quantum transport property. The…

介观与纳米尺度物理 · 物理学 2009-11-11 Hui Yu , J. -Q. Liang

Employing the nonequilibrium Green's function method, we develop a fully quantum mechanical model to study the coupled electron-phonon transport in one-dimensional atomic junctions in the presence of a weak electron-phonon interaction. This…

介观与纳米尺度物理 · 物理学 2008-03-04 J. T. Lü , Jian-Sheng Wang

We theoretically study the resonant tunneling and Fano resonance in quantum dots with electron-phonon (e-ph) interaction. We examine the bias-voltage ($V$) dependence of the decoherence, using Keldysh Green function method and perturbation…

介观与纳米尺度物理 · 物理学 2009-11-11 Akiko Ueda , Mikio Eto

We theoretically analyze phonon-assisted tunneling transport in a quantum dot side connected to a Majorana bound state in a topological superconducting nanowire. We investigate the behavior of the current through the dot, for a range of…

介观与纳米尺度物理 · 物理学 2024-08-07 Levente Máthé , Zoltán Kovács-Krausz , Ioan Botiz , Ioan Grosu , Khadija El Anouz , Abderrahim El Allati , Liviu P. Zârbo

We study an electron that interacts with phonons or other linear or nonlinear excitations as it resonantly tunnels. The method we use is based on mapping a many-body problem in a large variational space exactly onto a one-body problem. The…

凝聚态物理 · 物理学 2009-10-28 J. Bonca , S. A. Trugman

We present a theoretical analysis of the effect of inelastic electron scattering on current and its fluctuations in a mesoscopic quantum dot (QD) connected to two leads, based on a recently developed nonperturbative technique involving the…

介观与纳米尺度物理 · 物理学 2009-11-10 Bing Dong , H. L. Cui , X. L. Lei , Norman J. M. Horing

We study the influence of the phonon environment on the electron dynamics in a doped quantum dot molecule. A non-perturbative quantum kinetic theory based on correlation expansion is used in order to describe both diagonal and off-diagonal…

介观与纳米尺度物理 · 物理学 2015-05-20 A. Grodecka-Grad , J. Förstner

We analyze dephasing in single and double quantum dot systems. The decoherence is introduced by the B\"{u}ttiker model with current conserving fictitious voltage leads connected to the dots. By using the non-equilibrium Green function…

介观与纳米尺度物理 · 物理学 2009-11-07 Junren Shi , Zhongshui Ma , X. C. Xie

We investigate the full counting statistics of a single quantum dot strongly coupled to a local phonon and weakly tunnel-connected to two metallic electrodes. By employing the generalized nonequilibrium Green function method and the…

介观与纳米尺度物理 · 物理学 2015-06-16 Bing Dong , G. H. Ding , X. L. Lei
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