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Diabatic states and the couplings between them are important for quantifying, elucidating, and predicting the rates and mechanisms of many chemical and biochemical processes. Here, we propose and investigate approaches to accurately compute…

化学物理 · 物理学 2020-01-08 Yuezhi Mao , Andres Montoya-Castillo , Thomas E. Markland

The behavior of orbits in charged-particle beam transport systems, including both linear and circular accelerators as well as final focus sections and spectrometers, can depend sensitively on nonlinear fringe-field and high-order-multipole…

加速器物理 · 物理学 2014-11-20 Chad E. Mitchell , Alex J. Dragt

Exchange hole is the principle constituent in density functional theory, which can be used to accurately design exchange energy functional and range separated hybrid functionals coupled with some appropriate correlation. Recently, density…

材料科学 · 物理学 2017-09-14 Bikash Patra , Subrata Jana , Prasanjit Samal

We suggest universal expressions for the rates of charge transition between molecules in organic disordered semiconductors, which differ between electrons and holes. The donor and acceptor molecules (monomers) are represented in terms of…

无序系统与神经网络 · 物理学 2015-08-17 E. D. Gutliansky , Nir Tesler , Uri Peskin

In the past two decades, many research groups worldwide have tried to understand and categorize simple regimes in the charge transfer of such biological systems as DNA. Theoretically speaking, the lack of exact theories for electron-nuclear…

化学物理 · 物理学 2014-05-06 Pablo Ramos , Michele Pavanello

Charge inversion of a DNA double helix by an oppositely charged flexible polyelectrolyte (PE) is considered. We assume that, in the neutral state of the DNA-PE complex, each of the DNA charges is locally compensated by a PE charge. When an…

软凝聚态物质 · 物理学 2009-11-07 T. T. Nguyen , B. I. Shklovskii

Experiments have revealed correlation-driven behavior of DNA in charged solutions, including charge inversion and condensation. This paper presents calculations of a lattice-gas model of charge inversion for the adsorption of charged dimers…

软凝聚态物质 · 物理学 2019-02-15 Matthew D. Sievert , Marilyn F. Bishop , Tom McMullen

Pendry and MacKinnon meaningful discretization of Maxwell's equations was put forward specifically as part of a finite-element numerical algorithm. By contrast with a numerical approach, in the same spirit evoked by the relationships…

光学 · 物理学 2023-03-14 Ovidiu-Zeno Lipan , Aldo De Sabata

The characteristics of cation radical (hole) migration in heterogeneous DNA were investigated on the basis of Kubo formula, in which correlation functions were obtained from solutions of systems of Bogoliubov hierarchy. The cutting of…

其他凝聚态物理 · 物理学 2013-08-02 O. A. Ponomarev , A. S. Shigaev , A. I. Zhukov , V. D. Lakhno

We present a critical analysis of the popular fragment-orbital density-functional theory (FO-DFT) scheme for the calculation of electronic coupling values. We discuss the characteristics of different possible formulations or 'flavors' of…

材料科学 · 物理学 2016-02-17 Christoph Schober , Karsten Reuter , Harald Oberhofer

As a minimal model to study charge transfer effects in a transition metal (TM) and Oxygen (OX) chain, we consider a one-dimensional chain with spinless fermion with an alternating motif of site-pairs with nearest neighbor (NN) repulsion $U$…

强关联电子 · 物理学 2023-10-05 Prabhakar , Anamitra Mukherjee

Intermolecular charge-transfer is a highly important process in biology and energy-conversion applications where generated charges need to be transported over several moieties. However, its theoretical description is challenging since the…

化学物理 · 物理学 2024-05-03 Nicola Bogo , Christopher J. Stein

Charge transport in two zinc metal-organic frameworks (MOFs) has been investigated using periodic semiempirical molecular orbital calculations with the AM1* Hamiltonian. Restricted Hartree-Fock calculations underestimate the band gap…

We study charge transfer between donor-acceptor molecules subject to a mirror symmetry constraint in the presence of a dissipative environment. The symmetry requirement leads to the breakdown of the standard single reaction coordinate…

软凝聚态物质 · 物理学 2007-05-23 M. R. D'Orsogna , R. Bruinsma

Quantum mechanical methods based on the density functional theory (DFT) offer a realistic possibility of first-principles design of organic donor-acceptor systems and engineered band-gap materials. This promise is contingent upon the…

We present a very simple model for the study of charge transport in a molecule patterned on B-DNA. In this model we use a discrete non-linear Schr\"{o}dinger equation to describe electrons propagating along the sugar-phosphate backbone of…

软凝聚态物质 · 物理学 2009-11-10 Niels R. Walet , Wojtek J. Zakrzewski

Using a non-empirically tuned range-separated DFT approach, we study both the quasiparticle properties (HOMO-LUMO fundamental gaps) and excitation energies of DNA and RNA nucleobases (adenine, thymine, cytosine, guanine, and uracil). Our…

化学物理 · 物理学 2015-03-13 Michael E. Foster , Bryan M. Wong

We introduce transfer matrices to describe the motion of particles in the vicinity of the stable and unstable fixed points of longitudinal phase space and use them to analyze the transfer of bunches between radio-frequency systems operating…

加速器物理 · 物理学 2022-05-11 Volker Ziemann

The study of the electronic properties of charged defects is crucial for our understanding of various electrical properties of materials. However, the high computational cost of density functional theory (DFT) hinders the research on large…

计算物理 · 物理学 2023-06-16 Yuxing Ma , Yang Zhong , Yu Hongyu , Shiyou Chen , Hongjun Xiang

This work presents an innovative computational study of domain-based charge transfer that leverages the localized orbitals of pair coupled cluster doubles (pCCD). This method enables both directional monitoring and quantitative assessment…

化学物理 · 物理学 2026-05-19 Ram Dhari Pandey , Marta Galynska , Katharina Boguslawski , Pawel Tecmer