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相关论文: Charge-memory effect in a polaron model: equation-…

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We consider a small interacting sample coupled to several non-interacting leads. Initially, the system is at thermal equilibrium. At some instant $t_0$ the system is set into the so called partition-free transport scenario by turning on a…

数学物理 · 物理学 2019-01-24 H. D. Cornean , V. Moldoveanu , C. -A. Pillet

Electron-phonon and electron-electron interactions are in competition in determining the properties of molecular charge transfer conductors and superconductors. The direct influence of phonons on the electron-electron interaction was not…

强关联电子 · 物理学 2009-10-31 M. Meneghetti

We consider a bound system of charged particles moving in an external electromagnetic field, including leading relativistic corrections. The difference from the point particle with a magnetic moment comes from the presence of…

原子物理 · 物理学 2020-01-08 Krzysztof Pachucki , Vladimir A. Yerokhin

We discuss the properties of fluctuations of the electric charge in the vicinity of the chiral crossover transition within effective chiral models at finite temperature and vanishing net baryon density. The calculation includes…

高能物理 - 唯象学 · 物理学 2015-05-30 V. Skokov , B. Friman , K. Redlich

The paper deals with a simple three sites model for charge transfer phenomena in an one-dimensional donor (D) - bridge (B) - acceptor (A) system coupled with vibrational dynamics of the B site. It is found that in a certain range of…

介观与纳米尺度物理 · 物理学 2009-11-11 M. Lazrek , D. J. Bicout , S. Jaziri , E. Kats

We developed a theory of charge transport in a system of non-interacting polarons. The theory was conducted to a compact relation through a nonperturbative method based on electron-phonon Hamiltonian. The derived final result represents…

其他凝聚态物理 · 物理学 2012-03-15 F. Marsusi , J. Sabbaghzadeh

We introduce an integrable model of spin-polarized interacting electrons subject to a spin-conserving spin-orbit interaction. Using Bethe Ansatz and conformal field theory we calculate the exact large-time single-electron and density…

强关联电子 · 物理学 2014-06-03 A. A. Zvyagin , H. Johannesson

Understanding the interplay between charge and spin and its effects on transport is a ubiquitous challenge in quantum many-body systems. In the Fermi-Hubbard model, this interplay is thought to give rise to magnetic polarons, whose dynamics…

Here we present a theoretical analysis of the effect of inelastic electron scattering on spin-dependent transport characteristics (conductance, current-voltage dependence, magnetoresistance, shot noise spectrum, Fano factor) for magnetic…

介观与纳米尺度物理 · 物理学 2007-05-23 Kamil Walczak

Collective electronic fluctuations in correlated materials give rise to various important phenomena, such as existence of the charge ordering, superconductivity, Mott insulating and magnetic phases, plasmon and magnon modes, and other…

强关联电子 · 物理学 2019-03-19 E. A. Stepanov , A. Huber , A. I. Lichtenstein , M. I. Katsnelson

Numerical modeling is used to investigate the dynamics of a polaron in a chain with small random Langevin-like perturbations which imitate the environmental temperature $T$ and under the influence of a constant electric field. In the…

统计力学 · 物理学 2020-07-07 Nadezhda S. Fialko , Victor D. Lakhno

We show that individual vibrational modes in single-molecule junctions with asymmetric molecule-lead coupling can be selectively excited by applying an external bias voltage. Thereby, a non-statistical distribution of vibrational energy can…

介观与纳米尺度物理 · 物理学 2017-09-13 R. Volkovich , R. Härtle , M. Thoss , U. Peskin

Using the fermion-spin transformation to implement spin-charge separation of constrained electrons, a model of two $t-J$ chains with interchain single-electron hopping is studied by abelian bosonization. After spin-charge decoupling the…

凝聚态物理 · 物理学 2007-05-23 G. M. Zhang , S. Feng , L. Yu

A self-consistent method for calculating electron transport through a molecular device is proposed. It is based on density functional theory electronic structure calculations under periodic boundary conditions and implemented in the…

介观与纳米尺度物理 · 物理学 2007-05-23 San-Huang Ke , Harold U. Baranger , Weitao Yang

The calculation of the nonlinear conductance of a single-molecule junction is revisited. The self energy on the junction resulting from the electron-phonon interaction has at low temperatures logarithmic singularities (in the real part) and…

介观与纳米尺度物理 · 物理学 2015-05-14 O. Entin-Wohlman , Y. Imry , A. Aharony

We present a hybrid method based on a combination of quantum/classical molecular dynamics (MD) simulations and a mod el Hamiltonian approach to describe charge transport through bio-molecular wires with variable lengths in presence o f a…

软凝聚态物质 · 物理学 2015-05-13 R. Gutierrez , R. Caetano , P. B. Woiczikowski , T. Kubar , M. Elstner , G. Cuniberti

We study the hopping mechanism of the vibron excitation transport in the simple 1D model of biological macromolecular chains. We supposed that the vibron interaction with thermal oscillations of the macromolecular structural elements will…

介观与纳米尺度物理 · 物理学 2014-12-17 D. Čevizović , Z. Ivic. , S. Galović , A. Chizhov A. , A. Reshetnyak

Electron transport characteristics are investigated through some molecular chains attached to two non-superconducting electrodes by the use of Green's function method. Here we do parametric calculations based on the tight-binding…

介观与纳米尺度物理 · 物理学 2009-07-31 Santanu K. Maiti

We study the half filled extended Hubbard model on a two-dimensional square lattice using cluster dynamical mean field theory on clusters of size 8-20. We show that the model exhibits metallic, Mott insulating, and charge ordered phases,…

强关联电子 · 物理学 2017-04-28 Hanna Terletska , Tianran Chen , Emanuel Gull

We investigate the effects of spin-momentum locking on the interference and diffraction patterns due to a double- or single-slit in an electronic \emph{Gedankenexperiment}. We show that the inclusion of the spin-degree-of-freedom, when…

介观与纳米尺度物理 · 物理学 2020-10-15 D. Bercioux , T. van den Berg , D. Ferraro , J. Rech , T. Jonckheere , T. Martin