Results 11 to 20 of about 25,046 (159)

A Valence-Bond-Based Multiconfigurational Density Functional Theory: The λ-DFVB Method Revisited

open access: yesMolecules, 2021
A recently developed valence-bond-based multireference density functional theory, named λ-DFVB, is revisited in this paper. λ-DFVB remedies the double-counting error of electron correlation by decomposing the electron–electron interactions into the wave ...
Peikun Zheng   +4 more
doaj   +1 more source

Anisotropic deconfined criticality in Dirac spin liquids

open access: yesJournal of High Energy Physics, 2022
We analyze a Higgs transition from a U(1) Dirac spin liquid to a gapless ℤ2 spin liquid. This ℤ2 spin liquid is of relevance to the spin S = 1/2 square lattice antiferromagnet, where recent numerical studies have given evidence for such a phase existing ...
Henry Shackleton, Subir Sachdev
doaj   +1 more source

A Critical Look at Linus Pauling’s Influence on the Understanding of Chemical Bonding

open access: yesMolecules, 2021
The influence of Linus Pauling on the understanding of chemical bonding is critically examined. Pauling deserves credit for presenting a connection between the quantum theoretical description of chemical bonding and Gilbert Lewis’s classical bonding ...
Sudip Pan, Gernot Frenking
doaj   +1 more source

Theory of quasi-exact fault-tolerant quantum computing and valence-bond-solid codes

open access: yesNew Journal of Physics, 2022
In this work, we develop the theory of quasi-exact fault-tolerant quantum (QEQ) computation, which uses qubits encoded into quasi-exact quantum error-correction codes (‘quasi codes’).
Dong-Sheng Wang   +4 more
doaj   +1 more source

On the Nature of the Bonding in Coinage Metal Halides

open access: yesMolecules, 2022
This article analyzes the nature of the chemical bond in coinage metal halides using high-level ab initio Valence Bond (VB) theory. It is shown that these bonds display a large Charge-Shift Bonding character, which is traced back to the large Pauli ...
Slađana Đorđević   +3 more
doaj   +1 more source

Sodium potassium hydrogen citrate, NaKHC6H5O7

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2016
The crystal structure of sodium potassium hydrogen citrate has been solved and refined using laboratory X-ray powder diffraction data, and optimized using density functional theory techniques.
Alagappa Rammohan, James A. Kaduk
doaj   +1 more source

Rare Earth Ion-Doped Y2.95R0.05MgAl3SiO12 (R = Yb, Y, Dy, Eu, Sm) Garnet-Type Microwave Ceramics for 5G Application

open access: yesCrystals, 2022
In this work, Y2.95R0.05MgAl3SiO12 (R = Yb, Y, Dy, Eu, Sm) microwave single-phase dielectric ceramics were successfully prepared via a conventional ceramic sintering technology by doping a series of rare earth elements (Yb, Y, Dy, Eu, Sm) with different ...
Zijun Ye   +9 more
doaj   +1 more source

The BOLS-NEP theory reconciling the attributes of undercoordinated adatoms, defects, surfaces and nanostructures

open access: yesNano Materials Science, 2020
This article describes a theory unifying the unusual performance of the undercoordinated adatoms, point defects, terrace edges, surfaces, and nanostructures of various shapes.
Changqing Sun
doaj   +1 more source

Multiconfiguration Pair-Density Functional Theory for Transition Metal Silicide Bond Dissociation Energies, Bond Lengths, and State Orderings

open access: yesMolecules, 2021
Transition metal silicides are promising materials for improved electronic devices, and this motivates achieving a better understanding of transition metal bonds to silicon.
Meagan S. Oakley   +2 more
doaj   +1 more source

Valence Bonds in Random Quantum Magnets: Theory and Application to YbMgGaO_{4}

open access: yesPhysical Review X, 2018
We analyze the effect of quenched disorder on spin-1/2 quantum magnets in which magnetic frustration promotes the formation of local singlets. Our results include a theory for 2D valence-bond solids subject to weak bond randomness, as well as extensions ...
Itamar Kimchi, Adam Nahum, T. Senthil
doaj   +1 more source

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