Results 21 to 30 of about 297,991 (240)

Catalytic role of boron atoms in self-interstitial clustering in Si [PDF]

open access: yes, 2003
Using density functional theory (DFT) calculations and kinetic simulations, we have investigated the influence of boron atoms on self-interstitial clustering in Si. From DFT calculations of neutral interstitial clusters with a single B atom (BsIn, nIn–1 +
Goddard, William A., III   +1 more
core   +1 more source

Understanding density functional theory (DFT) and completing it in practice

open access: yesAIP Advances, 2014
We review some salient points in the derivation of density functional theory (DFT) and of the local density approximation (LDA) of it. We then articulate an understanding of DFT and LDA that seems to be ignored in the literature.
Diola Bagayoko
doaj   +1 more source

A flexible and scalable scheme for mixing computed formation energies from different levels of theory

open access: yesnpj Computational Materials, 2022
Computational materials discovery efforts are enabled by large databases of properties derived from high-throughput density functional theory (DFT), which now contain millions of calculations at the generalized gradient approximation (GGA) level of ...
Ryan S. Kingsbury   +8 more
doaj   +1 more source

Electronic structure and de Haas–van Alphen frequencies in KFe2As2 within LDA+DMFT

open access: yesNew Journal of Physics, 2014
Recent density functional theory (DFT) calculations for KFe _2 As _2 have been shown to be insufficient to satisfactorily describe angle-resolved photoemission (ARPES) measurements as well as observed de Haas–van Alphen (dHvA) frequencies. In the present
Steffen Backes   +3 more
doaj   +1 more source

DFT calculations of the binding energy of metallocenes

open access: yesChemical Physics Letters, 1997
As recently reported by Klopper and Luthi, there is a discrepancy between experiment and high-level quantum chemical calculations as to the value of the heterolytic metal–ligand bond disruption enthalpy of ferrocene. Indeed their ab initio calculations lead to a best estimate of 655 kcal/mol, whereas the experimental value is 635 kcal/mol.
Mayor-Lopez, Maria José, Weber, Jacques
openaire   +3 more sources

Statistical learning goes beyond the d-band model providing the thermochemistry of adsorbates on transition metals

open access: yesNature Communications, 2019
Assessing catalytic mechanisms using DFT calculations greatly aids catalyst design, but is impractical for large molecules. Here the authors develop a statistical learning-based thermochemical model for estimating adsorption of organics onto metals ...
Rodrigo García-Muelas, Núria López
doaj   +1 more source

Synthesis, Characterization and DFT-Based Investigation of a Novel Trinuclear Singly-Chloro-Bridged Copper(II)-1-Vinylimidazole Complex

open access: yesActa Chimica Slovenica, 2016
A novel trinuclear copper(II) complex [Cu3(µ2-Cl)2Cl4(1-Vim)6] with monodentate 1-vinylimidazole (1-Vim) and chloro ligands has been prepared and experimentally characterized by elemental analyses, Thermogravimetry (TGA, DTG, DTA), X-ray single crystal ...
Zuhal Yolcu   +3 more
doaj   +1 more source

Electron Emission from Diamondoids: A Diffusion Quantum Monte Carlo Study [PDF]

open access: yes, 2005
We present density-functional theory (DFT) and quantum Monte Carlo (QMC) calculations designed to resolve experimental and theoretical controversies over the optical properties of H-terminated C nanoparticles (diamondoids).
A. J. Williamson   +5 more
core   +2 more sources

Density functional theory + U modeling of polarons in organohalide lead perovskites

open access: yesAIP Advances, 2016
We investigate the possible formation of polarons in four organic perovskites (CH3NH3PbI3, CH3NH3PbBr3, CH3NH3PbCl3, and CH3NH3PbI2Cl1) using a density functional theory (DFT) calculations with local potentials and hybrid functionals.
Eric Welch   +2 more
doaj   +1 more source

Heterogeneous catalyst design by generative adversarial network and first-principles based microkinetics

open access: yesScientific Reports, 2022
Microkinetic analysis based on density functional theory (DFT) was combined with a generative adversarial network (GAN) to enable the artificial proposal of heterogeneous catalysts based on the DFT-calculated dataset.
Atsushi Ishikawa
doaj   +1 more source

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