Results 241 to 250 of about 379,294 (295)

Nanoscale size effects in α-FAPbI<sub>3</sub> evinced by large-scale ab initio simulations. [PDF]

open access: yesNat Commun
Carnevali V   +5 more
europepmc   +1 more source

Ab initio quantum many-body description of superconducting trends in the cuprates. [PDF]

open access: yesNat Commun
Cui ZH   +11 more
europepmc   +1 more source

Single-cell metabolite annotation by tandem mass spectrometry imaging and <i>ab initio</i> molecular dynamics-based fragmentation. [PDF]

open access: yesRSC Adv
Topalović M   +8 more
europepmc   +1 more source

Ab Initio Molecular Dynamics

Materials Science Forum, 1994
In this chapter, an introduction to ab initio molecular dynamics (AIMD) has been given. Many of the basic concepts, like the Hellman-Feynman forces, the difference between the Car-Parrinello molecular dynamics and AIMD, have been explained. Also a very versatile AIMD code, the CP2K, has been introduced.
openaire   +4 more sources

Just how ab initio is ab initio quantum chemistry?

Foundations of Chemistry, 2004
Quantum Mechanics has been the most spectacularly successful theory in the history of science. As is often mentioned the accuracy to which the gyromagnetic ratio of the electron can be calculated is a staggering nine decimal places. Quantum Mechanics has revolutionized the study of radiation and matter since its inception just overonehundredyears ago ...
openaire   +1 more source

Ab initio Study of HZnF

The Journal of Physical Chemistry A, 2009
On the basis of highly correlated ab initio calculations, an accurate determination of the electronic structure and of the rovibrational spectroscopy has been performed for the electronic ground state of the HZnF system. Using effective core pseudopotentials for the Zn and F atoms and associated aug-cc-pVQZ basis sets, we have calculated, at the ...
Hayashi, S.   +2 more
openaire   +3 more sources

Ab Initio Methods

1996
Abstract The term ’ab initio‘ is used to describe methods that seek to calculate molecular prop-erties from the beginning, that is, by solving Schrodinger’s equation without using any empirical data. Although it is always necessary to make approximations, it is possible to organize them in such a way that the accuracy of the calculation ...
openaire   +1 more source

Ab Initio Calculations

2010
Ab initio calculations rest on solving the Schrodinger equation; the nature of the necessary approximations determines the level of the calculation. In the simplest approach, the Hartree-Fock method, the total molecular wavefunction Ψ is approximated as a Slater determinant composed of occupied spin orbitals.
openaire   +1 more source

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