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A comprehensive description of molecular electron transfer reactions is essential for our understanding of fundamental phenomena in bio-energetics and molecular electronics. Experimental studies of molecular systems in condensed-phase…

Molecular wires (MW) are the fundamental building blocks for molecular electronic devices. They consist of a molecular unit connected to two continuum reservoirs of electrons (usually metallic leads). We rely on Landauer theory as the basis…

介观与纳米尺度物理 · 物理学 2009-10-31 Eldon Emberly , George Kirczenow

The Landauer formula allows us to describe theoretically the conductance in terms of the transmission function in a mesoscopic system. We propose a general method to evaluate the transmission function in the complex domain for systems…

介观与纳米尺度物理 · 物理学 2020-08-06 Mauricio J. Rodríguez , Bryan D. Gomez , Carlos Ramírez

We illustrate how classical chaotic dynamics influences the quantum properties at mesoscopic scales. As a model case we study semiclassically coherent transport through ballistic mesoscopic systems within the Landauer formalism beyond the…

介观与纳米尺度物理 · 物理学 2010-02-24 Daniel Waltner , Klaus Richter

We propose a unified diffusion-mobility relation which quantifies both quantum and classical levels of understanding on electron dynamics in ordered and disordered materials. This attempt overcomes the inability of classical Einstein…

其他凝聚态物理 · 物理学 2017-05-11 K. Navamani , Swapan K. Pati

We discuss an extension of our earlier work on the time-dependent Landauer--B\"uttiker formalism for noninteracting electronic transport. The formalism can without complication be extended to superconducting central regions since the…

介观与纳米尺度物理 · 物理学 2016-04-15 Riku Tuovinen , Robert van Leeuwen , Enrico Perfetto , Gianluca Stefanucci

We present a refined semiclassical approach to the Landauer conductance and Kubo conductivity of clean chaotic mesoscopic systems. We demonstrate for systems with uniformly hyperbolic dynamics that including off-diagonal contributions to…

介观与纳米尺度物理 · 物理学 2009-11-07 Klaus Richter , Martin Sieber

The semi-classical Bloch-Boltzmann theory is at the heart of our understanding of conduction in solids, ranging from metals to semi-conductors. Physical systems that are beyond the range of applicability of this theory are thus of…

材料科学 · 物理学 2009-04-10 G. Trambly de Laissardière , J. P. Julien , D. Mayou

Nonlinear electrical response permits a unique window into effects of band structure geometry. It can be calculated either starting from a Boltzmann approach for small frequencies, or using Kubo's formula for resonances at finite frequency.…

介观与纳米尺度物理 · 物理学 2023-04-26 Daniel Kaplan , Tobias Holder , Binghai Yan

We present dynamical transport calculations based on a tight-binding approximation to adiabatic time-dependent density functional theory (TD-DFTB). The reduced device density matrix is propagated through the Liouville-von Neumann equation.…

介观与纳米尺度物理 · 物理学 2015-06-15 Christian Oppenländer , Björn Korff , Thomas Frauenheim , Thomas A. Niehaus

One of the fundamental properties of semiconductors is their ability to support highly tunable electric currents in the presence of electric fields or carrier concentration gradients. These properties are described by transport coefficients…

材料科学 · 物理学 2020-02-19 Samuel Poncé , Wenbin Li , Sven Reichardt , Feliciano Giustino

A unified theory for the current through a nanoscale region of interacting electrons connected to two leads which can be either ferromagnet or superconductor is presented, yielding Meir-Wingreen-type formulas when applied to specific…

介观与纳米尺度物理 · 物理学 2009-11-07 Z. Y. Zeng , Baowen Li , F. Claro

We study transport properties of discrete quantum dynamical systems on the lattice, in particular Coined Quantum Walks and the Chalker--Coddington model. We prove existence of a non trivial charge transport and that the absolutely…

数学物理 · 物理学 2019-06-20 Joachim Asch , Olivier Bourget , Alain Joye

We calculate the electronic transport through a molecular dimer, in which an excess electron is delocalized over equivalent monomers, which can be locally distorted. In this system the Born-Oppenheimer approximation breaks down resulting in…

介观与纳米尺度物理 · 物理学 2009-03-11 F. Reckermann , M. Leijnse , M. R. Wegewijs , H. Schoeller

A microscopic theory of the transport properties of quantum point contacts giving a unified description of the normal conductor- superconductor (N-S) and superconductor-superconductor (S-S) cases is presented. It is based on a model…

凝聚态物理 · 物理学 2009-10-28 J. C. Cuevas , A. Martin-Rodero , A. Levy Yeyati

We study the fluctuations of generic currents in multi-terminal, multi-channel quantum transport settings. In the quantum regime, these fluctuations and the resulting precision differ strongly depending on whether the device is of fermionic…

介观与纳米尺度物理 · 物理学 2025-04-08 Didrik Palmqvist , Ludovico Tesser , Janine Splettstoesser

We study the electron transport in open quantum-dot systems described by the interacting resonant-level models with Coulomb interactions. We consider the situation in which the quantum dot is connected to the left and right leads…

介观与纳米尺度物理 · 物理学 2015-06-23 Akinori Nishino , Naomichi Hatano , Gonzalo Ordonez

We present a review on the mathematical methods used to theoretically study classical propagation and quantum transport in arrays of coupled photonic waveguides. We focus on analysing two types of binary photonic lattices where…

量子物理 · 物理学 2013-02-15 B. M. Rodríguez-Lara , H. Moya-Cessa

We give a brief introduction to Luttinger liquids and to the phenomena of electronic transport or conductance in quantum wires. We explain why the subject of transport in Luttinger liquids is relevant and fascinating and review some…

强关联电子 · 物理学 2009-10-31 Sumathi Rao

We address diffusion processes in a bounded domain, while focusing on somewhat unexplored affinities between the presence of absorbing and/or inaccessible boundaries. For the Brownian motion (L\'{e}vy-stable cases are briefly mentioned)…

统计力学 · 物理学 2017-10-24 Piotr Garbaczewski