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

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Our current understanding of strongly correlated electron systems is based on a homogeneous framework. Here we take a step going beyond this paradigm by incorporating inhomogeneity from the beginning. Specifying to systems near the Mott…

强关联电子 · 物理学 2016-05-12 Jian-Huang She , A. R. Bishop , Alexander V. Balatsky

We pioneerly investigate the non-equilibrium transport near a quantum phase transition in a generic and relatively simple case model, the dissipative resonant level model, that has many ramifications in nanosystems. We formulate a rigorous…

介观与纳米尺度物理 · 物理学 2015-05-13 Chung-Hou Chung , Karyn Le Hur , Matthias Vojta , Peter Wölfle

We review the description and modeling of transport phenomena among the electron systems coupled via scalar or vector photons. It consists of three parts. The first part is about scalar photons, i.e., Coulomb interactions. The second part…

介观与纳米尺度物理 · 物理学 2023-03-28 Jian-Sheng Wang , Jiebin Peng , Zu-Quan Zhang , Yong-Mei Zhang , Tao Zhu

The quantum dynamics of fermionic or bosonic many-body systems following external excitation can be successfully studied using two-time nonequilibrium Green's functions (NEGF) or single-time reduced density matrix methods. Approximations…

强关联电子 · 物理学 2022-07-12 Erik Schroedter , Jan-Philip Joost , Michael Bonitz

The onset of nonequilibrium in a driven Anderson-insulator is identified by monitoring the system with two-thermometers. Features of nonequilibrium appear at surprisingly weak drive intensity demonstrating, among other things, that…

无序系统与神经网络 · 物理学 2024-01-31 Z. Ovadyahu

We study the interplay of strong correlations and coherent driving by considering the strong-coupling Kondo model driven by a time-periodic bias voltage. Combining a recent nonequilibrium renormalization group method with Floquet theory, we…

介观与纳米尺度物理 · 物理学 2022-10-03 Valentin Bruch , Mikhail Pletyukhov , Herbert Schoeller , Dante M. Kennes

Many molecular junctions display stochastic telegraphic switching between two distinct current values, which is therefore an important source of fluctuations in nanoscale quantum transport. We investigate electronic fluctuations arising via…

介观与纳米尺度物理 · 物理学 2019-12-25 Samuel L. Rudge , Daniel S. Kosov

Floquet (periodic) driving has recently emerged as a powerful technique for engineering quantum systems and realizing non-equilibrium phases of matter. A central challenge to stabilizing quantum phenomena in such systems is the need to…

量子物理 · 物理学 2023-10-02 Guanghui He , Bingtian Ye , Ruotian Gong , Zhongyuan Liu , Kater W. Murch , Norman Y. Yao , Chong Zu

In this paper, we study transport properties of non-equilibrium systems under the application of light in many-terminal measurements, using the Floquet picture. We propose and demonstrate that the quantum transport properties can be…

介观与纳米尺度物理 · 物理学 2015-03-19 Takuya Kitagawa , Takashi Oka , Arne Brataas , Liang Fu , Eugene Demler

The periodic driving of a quantum system can enable new topological phases without analogs in static systems. This provides a route towards preparing non-equilibrium quantum phases rooted into the non-equilibrium nature by periodic driving…

强关联电子 · 物理学 2020-07-22 Yufei Zhu , Tao Qin , Xinxin Yang , Gao Xianlong , Zhaoxin Liang

The ultrafast optical manipulation of ordered phases in strongly correlated materials is a topic of significant theoretical, experimental, and technological interest. Inspired by a recent experiment on light-induced superconductivity in…

超导电性 · 物理学 2017-07-26 Mehrtash Babadi , Michael Knap , Ivar Martin , Gil Refael , Eugene Demler

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 describe a method and its implementation for calculating electronic structure and electron transport without approximating the structure using periodic super-cells. This effectively removes spurious periodic images and interference…

介观与纳米尺度物理 · 物理学 2019-11-27 Nick Papior , Gaetano Calogero , Susanne Leitherer , Mads Brandbyge

We develop a finite-element technique that allows one to evaluate correction of the order of $G_Q$ to various transport characteristics of arbitrary nanostructures. Common examples of such corrections are weak localization effect on…

介观与纳米尺度物理 · 物理学 2009-11-11 G. Campagnano , Yu. V. Nazarov

We model a small quantum dot with a magnetic impurity by the Anderson Hamiltonian with a supplementary exchange interaction term. The transport calculations are performed by means of the Green functions within the equation of motion scheme,…

材料科学 · 物理学 2015-06-25 Mugurel Tolea , Bogdan R. Bulka

Using nonequilibrium perturbation theory, we investigate the nonlinear transport through a quantum dot in the Kondo regime in the presence of a magnetic field. We calculate the leading logarithmic corrections to the local magnetization and…

强关联电子 · 物理学 2007-05-23 J. Paaske , A. Rosch , P. Wölfle

Graphene electrodes are promising candidates to improve reproducibility and stability in molecular electronics through new electrode-molecule anchoring strategies. Here we report sequential electron transport in few-layer graphene…

We study the effect of an external magnetic field on the transport properties of a quantum dot using a recently developed extension of the functional renormalization group approach to non-equilibrium situations. We discuss in particular the…

介观与纳米尺度物理 · 物理学 2007-07-03 Riccardo Gezzi , Andreas Dirks , Thomas Pruschke

The interplay between interference effects and electron-electron interactions in electron transport through an interacting double quantum dot system is investigated using a hierarchical quantum master equation approach which becomes exact…

介观与纳米尺度物理 · 物理学 2013-12-24 R. Härtle , G. Cohen , D. R. Reichman , A. J. Millis

We derive an exact expression for the differential conductance for a quantum dot in an arbitrary magnetic field for small bias voltage. The derivation is based on the symmetric Anderson model using renormalized perturbation theory and is…

强关联电子 · 物理学 2009-11-11 A. C. Hewson , J. Bauer , A. Oguri