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We calculate cohesive properties of LiF, NaF, KF, LiCl, NaCl, and KCl with ab-initio quantum chemical methods. The coupled-cluster approach is used to correct the Hartree-Fock crystal results for correlations and to systematically improve…

材料科学 · 物理学 2009-10-30 Klaus Doll , Hermann Stoll

Alchemical perturbation density functional theory has been shown to be an efficient and computationally inexpensive way to explore chemical compound space. We investigate approximations made, in terms of atomic basis sets and perturbation…

化学物理 · 物理学 2020-10-28 Giorgio Domenichini , Guido Falk von Rudorff , O. Anatole von Lilienfeld

We extend previous work on alkali halides by calculations for the heavy-atom species RbF, RbCl, LiBr, NaBr, KBr, RbBr, LiI, NaI, KI, and RbI. Relativistic effects are included by means of energy-consistent pseudopotentials, correlations are…

材料科学 · 物理学 2009-10-31 Klaus Doll , Hermann Stoll

We test the performance of a number of two- and one-parameter double-hybrid approximations, combining semilocal exchange-correlation density functionals with periodic local second-order M{\o}ller-Plesset (LMP2) perturbation theory, for…

化学物理 · 物理学 2015-06-22 Kamal Sharkas , Julien Toulouse , Lorenzo Maschio , Bartolomeo Civalleri

Molecules can form myriad crystalline polymorphs, each with distinct properties affecting their performance across diverse applications, from pharmaceuticals to functional materials and more. Predicting the thermodynamically most stable…

Lattice thermal conductivity (kL) is a crucial physical property of crystals with applications in thermal management, such as heat dissipation, insulation, and thermoelectric energy conversion. However, accurately and rapidly determining kL…

材料科学 · 物理学 2024-10-08 Xiaoying Wang , Guoyu Shu , Guimei Zhu , Jiansheng Wang , Jun Sun , Xiangdong Ding , Baowen Li , Zhibin Gao

Alkali-activated materials and related alternative cementitious systems are sustainable material technologies that have the potential to substantially lower CO$_2$ emissions associated with the construction industry. However, the impact of…

介观与纳米尺度物理 · 物理学 2016-12-23 V. Ongun Özçelik , Claire E. White

Knowledge of the vapor-liquid equilibrium (VLE) properties of molten salts is important in the design of thermal energy storage systems for solar power and nuclear energy production applications. The high temperatures involved make their…

统计力学 · 物理学 2024-06-19 Leann Tran , Jiri Skvara , William R. Smith

An ab initio study of the doping of alkali halide crystals (AX: A = Li, Na, K, Rb; X = F, Cl, Br, I) by ns2 anions (Ag- and Cu-) is presented. Large active clusters with 179 ions embedded in the surrounding crystalline lattice are…

材料科学 · 物理学 2009-10-31 Andrés Aguado , José M. López , Julio A. Alonso

Ac electrical measurements have been reported for alkali halide mixed crystals that were melt grown from NaCl, KCl and KBr starting materials. They showed a nonlinear variation of all the electrical parameters with the bulk composition.…

材料科学 · 物理学 2017-05-03 Vassiliki Katsika-Tsigourakou

In silico design of new molecules and materials with desirable quantum properties by high-throughput screening is a major challenge due to the high dimensionality of chemical space. To facilitate its navigation, we present a unification of…

化学物理 · 物理学 2018-10-02 Stijn Fias , K. Y. Samuel Chang , O. Anatole von Lilienfeld

We present a family of alchemical perturbation potentials that enable the calculation of hydration free energies of small to medium-sized molecules in a concerted single alchemical coupling step instead of the commonly used sequence of two…

定量方法 · 定量生物学 2021-02-24 Sheenam Khuttan , Solmaz Azimi , Joe Z. Wu , Emilio Gallicchio

The identification of new materials with superconducting properties is the pursuit in the realm of superconductivity research. Here, excitedly, we show that the simplest salt daily used can be made a superconductor at normal pressure only…

Molecular crystals play a central role in a wide range of scientific fields, including pharmaceuticals and organic semiconductor devices. However, they are challenging systems to model accurately with computational approaches because of a…

材料科学 · 物理学 2025-01-08 Flaviano Della Pia , Andrea Zen , Dario Alfè , Angelos Michaelides

Elpasolite is the predominant quaternary crystal structure (AlNaK$_2$F$_6$ prototype) reported in the Inorganic Crystal Structure Database. We have developed a machine learning model to calculate density functional theory quality formation…

化学物理 · 物理学 2016-09-28 Felix Faber , Alexander Lindmaa , O. Anatole von Lilienfeld , Rickard Armiento

This work is devoted to the elucidation the applicability of jellium model to the description of alkali cluster properties on the basis of comparison the jellium model results with those derived from experiment and within ab initio…

原子与分子团簇 · 物理学 2009-09-29 Anton Matveentsev , Andrey Lyalin , Ilia A Solov'yov , Andrey V Solov'yov , Walter Greiner

We generate a series of pseudopotentials to examine the relationship between pseudoatomic properties and solid-state results. We find that lattice constants and bulk moduli are quite sensitive to eigenvalue, total-energy difference and tail…

材料科学 · 物理学 2009-11-07 Ilya Grinberg , Nicholas J. Ramer , Andrew M. Rappe

We present an explicit water molecular dynamics simulation of dilute solutions of model alkyltrimethylammonium surfactant ions (number of methylene groups in the tail is 3, 5, 8, 10, and 12) in mixture with NaF, NaCl, NaBr, and NaI salts,…

软凝聚态物质 · 物理学 2013-12-17 M. Druchok , Č. Podlipnik , V. Vlachy

Accurate models of alkali and halide ions in aqueous solution are necessary for computer simulations of a broad variety of systems. Previous efforts to develop ion force fields have generally focused on reproducing experimental measurements…

化学物理 · 物理学 2012-08-21 Albert H. Mao , Rohit V. Pappu

We study the performance of spin-component-scaled second-order M{\o}ller-Plesset perturbation theory (SCS-MP2) for the prediction of the lattice constant, bulk modulus, and cohesive energy of 12 simple, three-dimensional, covalent and ionic…

材料科学 · 物理学 2022-11-23 Tamar Goldzak , Xiao Wang , Hong-Zhou Ye , Timothy C. Berkelbach
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