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Electron-phonon coupling is a key interaction that governs diverse physical processes such as carrier transport, superconductivity, and optical absorption. Calculating such interactions from first-principles with methods beyond…

材料科学 · 物理学 2025-08-21 Aleksandr Poliukhin , Nicola Colonna , Francesco Libbi , Samuel Poncé , Nicola Marzari

Properties of transport of molecular motors are investigated. A simplified model based on the concept of Brownian ratchets is applied. We analyze a stochastic equation of motion by means of numerical methods. The transport is systematically…

统计力学 · 物理学 2011-12-07 Lukasz Machura , Marcin Kostur , Jerzy Luczka

Within the frame of quantum dissipation theory, we develop a new hierarchical equations of motion theory, combined with the small polaron transformation. We fully investigate the electron transport of a single attractive impurity system…

介观与纳米尺度物理 · 物理学 2013-06-04 Feng Jiang , Shikuan Wang , Hang Xie , Yonghong Yan , YiJing Yan

Organic/inorganic donor-acceptor interfaces are gaining growing attention in organic photovoltaic applications as each component of the interface offers unique attributes. Here we use hybrid-density functional theory to examine the…

材料科学 · 物理学 2011-03-29 Na Sai , Kevin Leung , James R. Chelikowsky

In this study, we examine the dynamics of a one-dimensional Frenkel-Kontorova chain consisting of nanosize clusters (the ''particles'') and photochromic molecules (the ''bonds''), and being subjected to a periodic substrate potential.…

材料科学 · 物理学 2009-11-07 Bambi Hu , Jian-Yang Zhu

Imaging technique is applied to two-proton correlation functions to extract quantitative information about the space-time properties of the emitting source and about the fraction of protons that can be attributed to fast emission…

核实验 · 物理学 2009-11-10 G. Verde , P. Danielewicz , W. G. Lynch , D. A. Brown , C. K. Gelbke , M. B. Tsang , .

We show that the correlated stochastic fluctuation of the friction coefficient can give rise to long-range directional motion of a particle undergoing Brownian random walk in a constant periodic energy potential landscape. The occurrence of…

软凝聚态物质 · 物理学 2009-11-07 Lorenzo Marrucci , Domenico Paparo , Markus Kreuzer

We propose and compare different strategies to construct dynamic density functional theories (DDFTs) for inhomogeneous polymer systems close to equilibrium from microscopic simulation trajectories. We focus on the systematic construction of…

软凝聚态物质 · 物理学 2020-09-29 Sriteja Mantha , Shuanhu Qi , Friederike Schmid

We derive equations of motion for the reduced density matrix of a molecular system which undergoes energy transfer dynamics competing with fast internal conversion channels. Environmental degrees of freedom of such a system have no time to…

化学物理 · 物理学 2017-05-24 Joachim Seibt , Tomas Mancal

Spin crossover (SCO) complexes are highly promising candidates for a myriad of potential applications in room-temperature electronics; however, as it stands, establishing a clear connection between their spin-state switching and transport…

材料科学 · 物理学 2025-07-18 Archit Dhingra , M. Zaid Zaz

Metal-organic interfaces determine critical processes in organic electronic devices. The frontier molecular orbitals (highest occupied and lowest unoccupied molecular orbital, HOMO and LUMO) are crucial in determining charge-injection and…

材料科学 · 物理学 2025-04-09 Anubhab Chakraborty , Oliver L. A. Monti

We investigate the spectral and transport properties of many-body quantum systems with conserved charges and kinetic constraints. Using random unitary circuits, we compute ensemble-averaged spectral form factors and linear-response…

统计力学 · 物理学 2021-12-06 Hansveer Singh , Brayden Ware , Romain Vasseur , Aaron J. Friedman

We provide an intuitive platform for engineering exciton transfer dynamics. We show that careful consideration of the spectral density, which describes the system-bath interaction, leads to opportunities to engineer the transfer of an…

量子物理 · 物理学 2015-05-18 Alejandro Perdomo , Leslie Vogt , Ali Najmaie , Alán Aspuru-Guzik

Graded Al-doped ZnO layers, constituted by a mesoporous forest like system evolving into a compact transparent conductor, were synthesized by Pulsed Laser Deposition with different morphology to study the correlation with functional…

材料科学 · 物理学 2014-02-11 P. Gondoni , P. Mazzolini , A. M. Pillado Pérez , V. Russo , A. Li Bassi , C. S. Casari

This paper explores the dynamics of current and the quantum transport factor in a fermionic system with a central oscillator interacting with two fermionic reservoirs at different temperatures. We derive the master equation for the system…

量子物理 · 物理学 2025-03-25 Jayarshi Bhattacharya , Gautam Gangopadhyay , Sunandan Gangopadhyay

The population transfer dynamics of model donor-bridge-acceptor systems is studied by comparing a recently developed polaron-transformed quantum master equation (PQME) with the well-known Redfield and Forster theories of quantum transport.…

介观与纳米尺度物理 · 物理学 2015-08-12 Seogjoo Jang , Timothy C. Berkelbach , David R. Reichman

An important yet challenging aspect of atomistic materials modeling is reconciling experimental and computational results. Conventional approaches involve generating numerous configurations through molecular dynamics or Monte Carlo…

材料科学 · 物理学 2024-12-23 Tigany Zarrouk , Rina Ibragimova , Albert P. Bartók , Miguel A. Caro

In this review, we examine particle transport in strongly turbulent three-dimensional (3D) magnetized plasmas, characterized by intense (large-amplitude) magnetic field fluctuations. Such environments naturally give rise to a network of…

等离子体物理 · 物理学 2025-08-11 Heinz Isliker , Loukas Vlahos

The Hamiltonian structures of several hybrid kinetic-fluid models are identified explicitly, upon considering collisionless Vlasov dynamics for the hot particles interacting with a bulk fluid. After presenting different pressure-coupling…

等离子体物理 · 物理学 2010-07-29 Cesare Tronci

We investigate the effect of periodic driving by an external field on systems with attractive pairing interactions. These include spin systems (like the ferromagnetic XXZ model) as well as ultracold fermionic atoms described by the…

量子物理 · 物理学 2013-05-29 K. Kudo , T. Boness , T. S. Monteiro