Results 51 to 60 of about 1,114,043 (348)

Periodic table for Floquet topological insulators [PDF]

open access: yes, 2016
Periodically driven systems have recently been shown to host topological phases that are inherently dynamical in character, opening up a new arena in which to explore topological physics.
R. Roy, Fenner Harper
semanticscholar   +1 more source

Energy of Substitution of Anions and Cations in Zinc and Cadmium Telluride

open access: yesФізика і хімія твердого тіла, 2017
Energy substitution of cations and anions in ZnTe i CdTe by atoms from first and seventh group of the periodic table were calculated using the method of bonding orbitals. Based on the results conclusions about the most likely types of defects by doping.
V. V. Prokopiv   +5 more
doaj   +1 more source

Tight-binding bond parameters for dimers across the periodic table from density-functional theory [PDF]

open access: yes, 2019
We obtain parameters for non-orthogonal and orthogonal TB models from two-atomic molecules for all combinations of elements of period 1 to 6 and group 3 to 18 of the periodic table.
Jan Jenke   +4 more
semanticscholar   +1 more source

Alchemical and structural distribution based representation for improved QML

open access: yes, 2017
We introduce a representation of any atom in any chemical environment for the generation of efficient quantum machine learning (QML) models of common electronic ground-state properties.
Feifei Ren (558363)   +5 more
core   +4 more sources

Examination of the preservice chemistry teachers’ understanding of periodic table concepts

open access: yesSHS Web of Conferences, 2018
The purpose of this study was to examine the preservice chemistry teachers’ understanding of periodic table concepts and some atomic properties. The study group of this study was comprised of 17 preservice chemistry teachers who were undergraduate ...
Şen Şenol
doaj   +1 more source

Effect of the Y element on the structural, electronic and magnetic properties of Heusler compounds Co2YIn (Y = V, Nb, and Ti): An ab initio study

open access: yesAIP Advances, 2021
We report the effect of varying the Y element on the structural, electronic and magnetic properties of Co2YIn (Y = V, Nb, Ti) Heusler compounds using Density Functional Theory (DFT).
Zipporah Muthui   +3 more
doaj   +1 more source

Periodic table for topological insulators and superconductors [PDF]

open access: yes, 2009
Gapped phases of noninteracting fermions, with and without charge conservation and time-reversal symmetry, are classified using Bott periodicity. The symmetry and spatial dimension determines a general universality class, which corresponds to one of the ...
A. Kitaev
semanticscholar   +1 more source

Comparing Study of The Stability and spectral properties vibrations for some Tellurium (IV) compounds containing cycloctadienyl group by Quantum Mechanical Calculations

open access: yesمجلة بغداد للعلوم, 2013
Density Functional Theory (DFT) with B3LYP hybrid exchange-correlation functional and 3-21G basis set and semi-empirical methods (PM3) were used to calculate the energies (total energy, binding energy (Eb), molecular orbital energy (EHOMO-ELUMO), heat ...
Baghdad Science Journal
doaj   +1 more source

The Mnemonic Correction Becomes Meaningful Through Focus Group Discussion in Chemistry Learning

open access: yesJTK (Jurnal Tadris Kimiya), 2022
One of the concerns in the learning process is the meaning of writing mnemonics to help students memorize chemistry concepts. The research aimed to correct mnemonics in learning presentation by prospective chemistry teachers' students to be meaningful ...
Sri Winarni, Syahrial Syahrial
doaj   +1 more source

LASER ELEMENTAL ANALYZER LASER-Z FOR SOILS, ORES, MINERALS AND MINING AND CHEMICAL RAW MATERIAL [PDF]

open access: yesМинералогия, 2016
SciAsp Company, a leading world producer of portable analytical equipment, presents new series of laser analyzers Laser-Z. Portable mining and geological analyzers Laser-Z will perform field elemental analysis for almost any group of the Periodic Table.
E. Skorina
doaj  

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