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相关论文: Quantum transport in driven systems with vibration…

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Here we study the effect of decoherence on elastic and polaronic transport via discrete quantum states. The calculations are performed with the help of nonperturbative computational scheme, based on the Green's function theory within the…

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

Resonant electron transport through a mesoscopic region (quantum dot or single molecule) with electron-phonon interaction is considered at finite voltage. In this case the standard Landauer-B\"uttiker approach cannot be applied. Using the…

介观与纳米尺度物理 · 物理学 2009-11-10 D. A. Ryndyk , J. Keller

We analyze the effect of electron-phonon coupling on the full counting statistics of a molecular junction beyond the lowest order perturbation theory. Our approach allows to take into account analytically the feedback between the…

介观与纳米尺度物理 · 物理学 2010-10-14 D. F. Urban , R. Avriller , A. Levy Yeyati

Electronic transport is theoretically investigated in laterally confined semiconductor superlattices using the formalism of non-equilibrium Green's functions. The transport properties are calculated for nanowire superlattices of varying…

介观与纳米尺度物理 · 物理学 2014-04-25 Thomas Grange

In the present work, we theoretically analyze the steady-state thermoelectric transport through a single-molecule junction with a vibrating bridge. Thermally induced charge current in the system is explored using a nonequilibrium Green's…

介观与纳米尺度物理 · 物理学 2016-06-21 Natalya A. Zimbovskaya

As a step towards a more realistic modeling of vibrations in single-molecule devices, we investigate the effects of charge-dependent vibrational frequencies and anharmonic potentials on electronic transport. For weak phonon relaxation, we…

介观与纳米尺度物理 · 物理学 2007-05-23 Jens Koch , Felix von Oppen

We study thermoelectric transport through a coherent molecular conductor connected to two electron and two phonon baths using the nonequilibrium Green's function method. We focus on the mutual drag between electron and phonon transport as a…

介观与纳米尺度物理 · 物理学 2016-05-11 Jing-Tao Lü , Jian-Sheng Wang , Per Hedegård , Mads Brandbyge

Finite-bias electron transport through single molecules generally induces nonequilibrium molecular vibrations (phonons). By a mapping to a Fokker-Planck equation, we obtain analytical scaling forms for the nonequilibrium phonon distribution…

介观与纳米尺度物理 · 物理学 2007-05-23 Jens Koch , Matthias Semmelhack , Felix von Oppen , Abraham Nitzan

The transport and fluctuation properties of organic molecules ordered parallel between two Au contact leads are investigated by the method of surface Green function. From first-principles simulation the relevant hopping parameters are…

介观与纳米尺度物理 · 物理学 2009-04-03 K. Morawetz S. Gemming , R. Luschtinetz , T. Kunze , P. Lipavský , L. M. Eng , G. Seifert , V. Pankoke , P. Milde

We perform a systematic analysis of the influence of phonon driving on the superconducting Holstein model coupled to heat baths by studying both the transient dynamics and the nonequilibrium steady state (NESS) in the weak and strong…

超导电性 · 物理学 2017-07-26 Yuta Murakami , Naoto Tsuji , Martin Eckstein , Philipp Werner

Strongly driving a two-level quantum system with light leads to a ladder of Floquet states separated by the photon energy. Nanoscale quantum devices allow the interplay of confined electrons, phonons, and photons to be studied under strong…

介观与纳米尺度物理 · 物理学 2016-11-09 J. Stehlik , Y. -Y. Liu , C. Eichler , T. R. Hartke , X. Mi , M. J. Gullans , J. M. Taylor , J. R. Petta

We investigate the electronic transport behavior of Fano-Anderson (FA) systems, consisting of a one-dimensional finite backbone chain and an attached side-group of varying length. The tight-binding model within the non-equilibrium Green's…

介观与纳米尺度物理 · 物理学 2025-01-08 Koushik R. Das , Sudipta Dutta

Due to random dopant fluctuations, the device-to-device variability is a serious challenge to emerging nanoelectronics. In this work we present theoretical formalisms and numerical simulations of quantum transport variability, based on the…

介观与纳米尺度物理 · 物理学 2013-11-14 Yu Zhu , Lei Liu , Hong Guo

We explore the prospects to control by use of time-dependent fields quantum transport phenomena in nanoscale systems. In particular, we study for driven conductors the electron current and its noise properties. We review recent…

介观与纳米尺度物理 · 物理学 2007-05-23 Sigmund Kohler , Jörg Lehmann , Peter Hänggi

A time-dependent inelastic electron transport theory for strong electron-phonon interaction is established via the equations of motion method combined with the small polaron transformation. In this work, the dissipation via electron-phonon…

介观与纳米尺度物理 · 物理学 2015-05-21 Yu Zhang , ChiYung Yam , GuanHua Chen

The description of quantum transport in a quadruple quantum-dot structure (QQD) is proposed taking into account the Coulomb correlations and nonzero bias voltages. To achieve this goal the combination of nonequilibrium Green's functions and…

介观与纳米尺度物理 · 物理学 2018-05-29 M. Yu. Kagan , S. V. Aksenov

We study photon-assisted transport in a single-level quantum dot system under a periodically oscillating field. Photon-assisted current noises in the presence of the Coulomb interaction are calculated based on a gauge-invariant formulation…

介观与纳米尺度物理 · 物理学 2015-06-23 Takafumi J. Suzuki , Takeo Kato

When the coupled electron-nuclear dynamics are subjected to strong Floquet driving, there is a strong breakdown of the Born-Oppenheimer approximation. In this article, we derive a Fokker-Planck equation to describe non-adiabatic molecular…

量子物理 · 物理学 2023-06-14 Vahid Mosallanejad , Jingqi Chen , Wenjie Dou

Quantum transport properties through some multilevel quantum dots sandwiched between two metallic contacts are investigated by the use of Green's function technique. Here we do parametric calculations, based on the tight-binding model, to…

介观与纳米尺度物理 · 物理学 2009-11-06 Santanu K. Maiti

Computationally inexpensive approximations describing electron-phonon scattering in molecular-scale conductors are derived from the non-equilibrium Green's function method. The accuracy is demonstrated with a first principles calculation on…

介观与纳米尺度物理 · 物理学 2007-05-23 Magnus Paulsson , Thomas Frederiksen , Mads Brandbyge