Results 31 to 40 of about 379,294 (295)

Ab initio molecular dynamics benchmarking study of machine-learned potential energy surfaces for the HBr+ + HCl reaction

open access: yesCarbon Trends, 2023
Machine learning has grown in use for constructing potential energy surfaces for their ability to theoretically recreate any function given enough training as well as their fast predictive powers after being trained.
Kazuumi Fujioka   +3 more
doaj   +1 more source

Modeling the high-temperature phase coexistence region of mixed transition metal oxides from ab initio calculations

open access: yesPhysical Review Research, 2021
Accurate knowledge of phase coexistence regions, i.e., solubility gaps (SGs), is key to the development of mixed transition metal oxides for various applications, such as thermochemical energy storage, or catalysis.
Suzanne K. Wallace   +5 more
doaj   +1 more source

Band structures of II-VI semiconductors using Gaussian basis functions with separable ab initio pseudopotentials: Application to prediction of band offsets [PDF]

open access: yes, 1996
We describe the implementation of a separable pseudopotential into the dual space approach for ab initio density-functional calculations using Gaussian basis functions.
Chen, Xiaojie   +4 more
core   +1 more source

First-principles results for electromagnetic properties of $sd$ shell nuclei

open access: yes, 2017
In this work we present $ab~initio$ shell-model calculations for electric quadrupole moments and magnetic dipole moments of $sd$ shell nuclei using valence-space Hamiltonians derived with two $ab~initio$ approaches: the in-medium similarity ...
Saxena, Archana, Srivastava, Praveen C.
core   +1 more source

Ab initio energies of nonconducting crystals by systematic fragmentation [PDF]

open access: yes, 2015
A systematic method for approximating the ab initio electronic energy of molecules from the energies of molecular fragments has been adapted to estimate the total electronic energy of crystal lattices. The fragmentation method can be employed with any ab
Collins, Michael A.   +1 more
core   +1 more source

Machine learning method for tight-binding Hamiltonian parameterization from ab-initio band structure

open access: yesnpj Computational Materials, 2021
The tight-binding (TB) method is an ideal candidate for determining electronic and transport properties for a large-scale system. It describes the system as real-space Hamiltonian matrices expressed on a manageable number of parameters, leading to ...
Zifeng Wang   +5 more
doaj   +1 more source

Thermal collapse of spin-polarization in half-metallic ferromagnets [PDF]

open access: yes, 2005
The temperature dependence of the magnetization and spin-polarization at the Fermi level is investigated for half-metallic ferromagnets. We reveal a new mechanism, where the hybridization of states forming the half-metallic gap depends on thermal spin ...
D. P. Landau   +5 more
core   +2 more sources

A New AB Initio Repeats Finding Algorithm for Reference Genome [PDF]

open access: yesJournal of Interdisciplinary Sciences, 2017
It has become clear that repetitive sequences have played multiple roles in eukaryotic genome evolution. However, identification of repetitive elements can be difficult in the ab initio manner from reference sequence.
Shuaibin Lian   +3 more
doaj  

COMPUTATIONAL INVESTIGATION ON THE STRUCTURE AND NMR CHEMICAL SHIFTS OF ENDO-CONE [CS2(p-METHYLCALIX[4]ARENE)] COMPLEX

open access: yesIndonesian Journal of Chemistry, 2010
The structure and NMR chemical shifts of endo-cone [CS2(p-methylcalix[4]arene)] complex have been computationally investigated using BIO+ force fields, semi-empirical (PM3) and ab initio (RHF/6-311G++(d,p)) calculations. The first comparison of ab initio
Hanggara Sudrajat   +4 more
doaj   +1 more source

Ab initio lattice dynamics of nonconducting crystals by systematic fragmentation [PDF]

open access: yes, 2016
A systematic method for approximating the ab initio electronic energy of crystal lattices has been improved by the incorporation of long range electrostatic and dispersion interactions.
Collins, Michael A.
core   +1 more source

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